952 FNUS56 KPDT 071325 FWFPDT Fire Weather Planning Forecast for NE Oregon and SE Washington National Weather Service Pendleton OR 625 AM PDT Sun Sep 7 2025 .DISCUSSION...A wet and cool pattern will continue over the course of the next week. Thunderstorm chances will once again materialize today, however activity is expected to be more isolated than it has been over the last several days. Monday into Tuesday, showers are expected to become more widespread, with temperatures starting to cool towards normal and even below normal values for the time of year. Isolated storms remain a risk heading into the work week, however most storms are expected to be wetting in nature. ***Thunderstorms imply strong gusty winds*** ***Winds are 20 foot 10 minute averages*** ***CWR-chance of wetting rain 0.10 or greater*** ***Ventilation Index is derived from the transport wind multiplied by the mixing height in 100's of feet. Index categories are a generalized indicator and users are encourage to develop criteria that are suitable and representative of dispersion conditions in their local area of interest.*** Note: Max transport winds may not occur at the same time as max mixing height. WAZ695-072315- East Washington South Central Cascade Mountains- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. Hazy. A slight chance of showers in the morning. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....70-79...except 61-70 ridges. * Min humidity........46-61 percent...except 57-72 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......7000 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (33-111) increasing to poor to fair (148-316) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers in the evening. * Min temperature.....48-54. * Max humidity........75-90 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (62-172) decreasing to poor (28-94) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A slight chance of showers in the afternoon. * Max temperature.....70-78...except 61-69 ridges. * Min humidity........37-49 percent...except 45-60 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 5 mph in the morning becoming upslope less than 5 mph. * Ridges/upr slopes....West winds 1 to 5 mph in the morning becoming light less than 5 mph. * CWR.................10 percent. * Chc of lightning....0 percent. * Mixing height.......7500 ft agl. * Transport winds.....West around 5 mph. * Ventilation Index...Poor (26-80) increasing to poor to fair (130-204) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Cooler. Showers likely and a slight chance of thunderstorms. Lows 47 to 53. Highs 52 to 66. West winds 1 to 6 mph. .WEDNESDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 46 to 52. Highs 58 to 71. Northwest winds 1 to 6 mph. .THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 47 to 53. Highs 61 to 74. Terrain driven winds less than 5 mph. .FRIDAY...A slight chance of showers. Mostly cloudy. Lows 48 to 54. Highs 61 to 74. West winds 1 to 5 mph. .SATURDAY...Mostly cloudy with a slight chance of showers. Lows 48 to 54. Highs 61 to 74. Terrain driven winds less than 5 mph. $$ WAZ690-072315- Kittitas Valley- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. Hazy. A slight chance of showers in the morning. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....80-87...except 72-82 ridges. * Min humidity........39-49 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......9000 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (49-125) increasing to fair (349-481) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the evening. Hazy after midnight. * Min temperature.....53-60. * Max humidity........67-82 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 5 to 11 mph. * Ridges/upr slopes....Northwest winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest 10 to 15 mph. * Ventilation Index...Poor to fair (154-252) decreasing to poor (36-106) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. Hazy in the morning. A slight chance of showers in the afternoon. * Max temperature.....77-82...except 68-78 ridges. * Min humidity........35-44 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 7 mph in the morning becoming upslope less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 7 mph in the morning becoming light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......7000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (32-90) increasing to poor (127-195) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers likely and a slight chance of thunderstorms. Lows 53 to 60. Highs 66 to 73. West winds 2 to 7 mph. .WEDNESDAY...A slight chance of showers. Partly cloudy. Lows 51 to 57. Highs 71 to 77. Northwest winds 2 to 7 mph. .THURSDAY...Partly cloudy with a slight chance of showers and thunderstorms. Lows 52 to 60. Highs 72 to 79. Northwest winds 1 to 6 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 53 to 60. Highs 73 to 80. Northwest winds 1 to 6 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 53 to 59. Highs 72 to 78. West winds 1 to 5 mph. $$ WAZ694-072315- Yakama Alpine District- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A chance of showers. A slight chance of thunderstorms in the afternoon. Hazy in the afternoon. * Max temperature.....75-83...except 65-76 ridges. * Min humidity........38-53 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......8500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (33-77) increasing to fair (243-403) in the afternoon. .TONIGHT... * Sky/weather.........Mostly clear then becoming mostly cloudy. * Min temperature.....48-56. * Max humidity........74-89 percent. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (97-183) decreasing to poor (25-58) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....71-78...except 63-73 ridges. * Min humidity........40-55 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......7500 ft agl. * Transport winds.....West around 5 mph. * Ventilation Index...Poor (25-46) increasing to poor to fair (159-235) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Cooler. Showers likely and a slight chance of thunderstorms. Lows 48 to 55. Highs 57 to 69. West winds 1 to 5 mph. .WEDNESDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 44 to 52. Highs 62 to 74. West winds 1 to 5 mph. .THURSDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 47 to 54. Highs 64 to 75. Terrain driven winds less than 5 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 47 to 55. Highs 65 to 77. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 47 to 54. Highs 64 to 76. Terrain driven winds less than 5 mph. $$ ORZ691-WAZ691-072315- Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. Hazy. A chance of showers. A slight chance of thunderstorms in the afternoon. * Max temperature.....80-88. * Min humidity........33-42 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 5 to 11 mph. * Ridges/upr slopes....West winds 5 to 11 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......8500 ft agl. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (40-112) increasing to fair (300-494) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A slight chance of showers in the evening. * Min temperature.....56-61. * Max humidity........66-81 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 4 to 10 mph. * Ridges/upr slopes....West winds 4 to 10 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Poor to fair (154-246) decreasing to poor (27-61) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....76-83. * Min humidity........36-45 percent. * 20-foot winds....... * Valleys/lwr slopes...West winds 1 to 6 mph. * Ridges/upr slopes....West winds 1 to 6 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......7500 ft agl. * Transport winds.....West around 5 mph. * Ventilation Index...Poor (25-73) increasing to poor to fair (141-267) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers likely and a slight chance of thunderstorms. Lows 54 to 59. Highs 69 to 76. Southwest winds 4 to 9 mph. .WEDNESDAY...A slight chance of showers. Mostly cloudy. Lows 52 to 57. Highs 72 to 77. West winds 2 to 7 mph. .THURSDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 52 to 57. Highs 73 to 79. Southwest winds 1 to 5 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 53 to 58. Highs 76 to 81. Southwest winds 2 to 7 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 53 to 58. Highs 76 to 81. Southwest winds 2 to 7 mph. $$ ORZ692-WAZ692-072315- Northern Blue Mountains of Oregon-Blue Mountains of Washington- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. Hazy in the morning. A slight chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....75-84...except 70-75 ridges. * Min humidity........37-48 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......9000 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Poor (25-59) increasing to poor to fair (179-301) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy then becoming partly cloudy. Hazy in the evening. A chance of showers and a slight chance of thunderstorms in the evening. * Min temperature.....50-58. * Max humidity........68-83 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Southwest winds 1 to 5 mph. * Ridges/upr slopes....light winds less than 5 mph becoming west 1 to 5 mph after midnight. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (60-136) decreasing to poor (25-55) after midnight. .MONDAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....74-82...except 69-74 ridges. * Min humidity........36-45 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......9500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-47) increasing to poor to fair (155-361) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Cooler. Showers likely and a slight chance of thunderstorms. Lows 48 to 55. Highs 61 to 71. West winds 1 to 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 47 to 54. Highs 61 to 71. Terrain driven winds less than 5 mph. .THURSDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 47 to 55. Highs 62 to 73. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 48 to 56. Highs 64 to 75. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 48 to 55. Highs 66 to 77. Terrain driven winds less than 5 mph. $$ ORZ693-WAZ693-072315- Canyon Grasslands of Wallowa County- Southeast Washington Grande Ronde Valley- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....79-88...except 73-80 ridges. * Min humidity........31-40 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................20 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......12500 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Poor (26-62) increasing to poor to good (145-557) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A chance of showers and thunderstorms in the evening. * Min temperature.....48-58. * Max humidity........77-92 percent...except 68-78 percent ridges. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................20 percent. * Chc of lightning....30 percent (chance). * Mixing height.......Near surface. * Transport winds.....West around 5 mph. * Ventilation Index...Poor (32-100) decreasing to poor (25-50) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....76-84...except 70-76 ridges. * Min humidity........29-41 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......12000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-44) increasing to poor to good (197-559) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Cooler. Showers likely and a slight chance of thunderstorms. Mostly cloudy. Lows 46 to 56. Highs 64 to 73. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 44 to 54. Highs 63 to 73. Terrain driven winds less than 5 mph. .THURSDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 45 to 55. Highs 65 to 75. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 45 to 55. Highs 65 to 75. Terrain driven winds less than 5 mph. .SATURDAY...A chance of showers. Partly cloudy. Lows 45 to 55. Highs 68 to 78. Terrain driven winds less than 5 mph. $$ ORZ701-072315- Eastern Columbia River Gorge of Oregon- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. Hazy. A slight chance of showers. * Max temperature.....76-82. * Min humidity........38-53 percent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 3 to 8 mph...except northwest 4 to 10 mph in the eastern Columbia River Gorge. * Ridges/upr slopes....Northwest winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6500 ft agl. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Poor (39-151) increasing to fair (283-443) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....53-58. * Max humidity........75-90 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...West winds 3 to 8 mph. * Ridges/upr slopes....West winds 3 to 8 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West 10 to 15 mph. * Ventilation Index...Poor to fair (130-246) decreasing to poor (28-90) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A slight chance of showers in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. * Max temperature.....72-77. * Min humidity........51-66 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1 to 6 mph in the afternoon. In the eastern Columbia River Gorge, west winds 2 to 7 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................30 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......6000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (25-86) increasing to poor to fair (180-314) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers and a slight chance of thunderstorms. Lows 53 to 58. Highs 66 to 71. West winds 2 to 7 mph. .WEDNESDAY...A slight chance of showers. Partly cloudy. Lows 50 to 55. Highs 71 to 76. West winds 2 to 7 mph. .THURSDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 51 to 56. Highs 72 to 77. West winds 1 to 6 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 51 to 57. Highs 75 to 80. West winds 1 to 6 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 52 to 57. Highs 74 to 79. West winds 2 to 7 mph. $$ ORZ702-072315- East Slopes of the Mt. Hood National Forest- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. Hazy in the morning. A slight chance of showers in the morning, then a chance of showers in the afternoon. * Max temperature.....75-82...except 68-77 ridges. * Min humidity........37-51 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......6500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (25-66) increasing to poor to fair (171-325) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. * Min temperature.....49-57. * Max humidity........65-80 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West around 10 mph. * Ventilation Index...Poor (60-182) decreasing to poor (25-56) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A chance of showers in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. * Max temperature.....69-77...except 62-71 ridges. * Min humidity........49-63 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................70 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......5500 ft agl. * Transport winds.....West around 5 mph. * Ventilation Index...Poor (25-43) increasing to poor (81-191) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers and a slight chance of thunderstorms. Lows 47 to 56. Highs 55 to 69. Terrain driven winds less than 5 mph. .WEDNESDAY...A chance of showers. Mostly cloudy. Lows 46 to 53. Highs 60 to 73. Terrain driven winds less than 5 mph. .THURSDAY...Partly cloudy with a chance of showers. Lows 47 to 55. Highs 62 to 74. Terrain driven winds less than 5 mph. .FRIDAY...A slight chance of showers. Partly cloudy. Lows 48 to 56. Highs 65 to 77. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 49 to 55. Highs 65 to 77. Terrain driven winds less than 5 mph. $$ ORZ695-072315- Eagle Cap Wilderness- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....74-84...except 63-74 ridges. * Min humidity........31-46 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming southwest 2 to 5 mph in the afternoon. * CWR.................10 percent. * Chc of lightning....30 percent (chance). * Mixing height.......11500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (26-64) increasing to fair to excellent (478-802) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy. A chance of showers and a slight chance of thunderstorms in the evening. * Min temperature.....50-56...except 44-52 ridges. * Max humidity........70-85 percent. * Humidity recovery...Good...except Excellent ridges. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest around 5 mph. * Ventilation Index...Poor (37-105) decreasing to poor (25-57) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....71-82...except 60-72 ridges. * Min humidity........29-43 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph becoming south 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......11000 ft agl. * Transport winds.....Southeast around 5 mph increasing to south around 15 mph in the afternoon. * Ventilation Index...Poor (25-43) increasing to fair to excellent (460-766) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Cooler. A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 42 to 52. Highs 55 to 70. Northwest winds 1 to 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 40 to 50. Highs 53 to 68. Terrain driven winds less than 5 mph. .THURSDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 41 to 50. Highs 54 to 69. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 41 to 51. Highs 55 to 70. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 42 to 52. Highs 58 to 73. Terrain driven winds less than 5 mph. $$ ORZ694-072315- Grande Ronde Valley of Oregon- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A chance of showers and thunderstorms in the afternoon. * Max temperature.....82-87. * Min humidity........35-42 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming southwest 3 to 6 mph in the afternoon. * CWR.................20 percent. * Chc of lightning....30 percent (chance). * Mixing height.......9000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (30-50) increasing to fair (290-492) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A chance of showers and a slight chance of thunderstorms in the evening. Hazy after midnight. * Min temperature.....48-53. * Max humidity........84-99 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 2 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor (97-155) decreasing to poor (37-65) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....80-85. * Min humidity........34-40 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......9500 ft agl. * Transport winds.....North around 5 mph shifting to the south in the afternoon. * Ventilation Index...Poor (27-37) increasing to fair to good (480-632) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Not as warm. Showers likely and a slight chance of thunderstorms. Lows 46 to 51. Highs 70 to 75. Northwest winds 1 to 6 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 45 to 50. Highs 69 to 74. Northwest winds 1 to 5 mph. .THURSDAY...A chance of showers and thunderstorms. Mostly cloudy. Lows 45 to 50. Highs 70 to 75. Northwest winds 1 to 5 mph. .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 45 to 50. Highs 72 to 77. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 45 to 50. Highs 73 to 78. Terrain driven winds less than 5 mph. $$ ORZ699-072315- Western Forested Blue Mountains- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....75-80...except 68-75 ridges. * Min humidity........34-48 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......10000 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-51) increasing to fair (246-440) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers and thunderstorms in the evening. Hazy. * Min temperature.....48-54. * Max humidity........70-85 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor (90-172) decreasing to poor (25-50) after midnight. .MONDAY... * Sky/weather.........Partly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....72-78...except 66-72 ridges. * Min humidity........33-47 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................20 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......10000 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Poor (25-36) increasing to fair to good (270-690) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers likely and a slight chance of thunderstorms. Lows 44 to 51. Highs 59 to 68. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 43 to 49. Highs 58 to 68. Terrain driven winds less than 5 mph. .THURSDAY...A chance of showers and thunderstorms. Mostly cloudy. Lows 43 to 50. Highs 60 to 69. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 44 to 51. Highs 63 to 72. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 45 to 52. Highs 65 to 73. Terrain driven winds less than 5 mph. $$ ORZ696-072315- John Day Valley- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. Hazy. A slight chance of showers in the morning. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....75-83...except 71-76 ridges. * Min humidity........32-40 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......11000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (27-57) increasing to fair to good (313-501) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers and thunderstorms in the evening. Hazy. * Min temperature.....51-56. * Max humidity........67-81 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor to fair (131-219) decreasing to poor (25-47) after midnight. .MONDAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. Hazy in the morning. A slight chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....72-80...except 68-73 ridges. * Min humidity........30-43 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................20 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......11000 ft agl. * Transport winds.....Southeast 5 to 10 mph. * Ventilation Index...Poor (25-42) increasing to fair to good (254-684) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 47 to 53. Highs 63 to 71. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 46 to 52. Highs 63 to 72. Terrain driven winds less than 5 mph. .THURSDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 47 to 52. Highs 65 to 74. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a slight chance of showers. Lows 47 to 53. Highs 68 to 77. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 47 to 53. Highs 70 to 79. Terrain driven winds less than 5 mph. $$ ORZ700-072315- Central Mountains of Oregon- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....75-80...except 69-74 ridges. * Min humidity........30-43 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming west 2 to 5 mph in the afternoon. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......10000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (25-45) increasing to fair to good (312-538) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. Hazy in the evening. A slight chance of showers and thunderstorms in the evening. * Min temperature.....45-54. * Max humidity........75-90 percent. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...Northwest winds 1 to 6 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor to fair (93-221) decreasing to poor (25-35) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. Hazy in the morning. A slight chance of showers in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. * Max temperature.....70-77...except 65-71 ridges. * Min humidity........35-50 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming west 2 to 7 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming southwest 1 to 6 mph in the afternoon. * CWR.................40 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......9500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-35) increasing to poor to excellent (171-783) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 41 to 51. Highs 62 to 68. West winds 2 to 7 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 41 to 49. Highs 63 to 70. Northwest winds 1 to 6 mph. .THURSDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 40 to 50. Highs 65 to 71. Northwest winds 1 to 5 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 41 to 51. Highs 69 to 76. West winds 1 to 5 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 42 to 52. Highs 71 to 77. Terrain driven winds less than 5 mph. $$ ORZ703-072315- Warm Springs Reservation- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers in the morning. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....76-84...except 65-73 ridges. * Min humidity........38-45 percent...except 44-59 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2 to 7 mph in the afternoon. * Ridges/upr slopes....West winds 2 to 7 mph. * CWR.................10 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......8000 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (29-59) increasing to fair (287-389) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers in the evening. * Min temperature.....52-57. * Max humidity........67-79 percent. * Humidity recovery...Good. * 20-foot winds....... * Valleys/lwr slopes...West winds 2 to 7 mph in the evening becoming drainage winds less than 5 mph. * Ridges/upr slopes....West winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor to fair (116-200) decreasing to poor (25-46) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A chance of showers in the morning, then showers and a chance of thunderstorms in the afternoon. * Max temperature.....70-77...except 57-68 ridges. * Min humidity........51-66 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................80 percent. * Chc of lightning....30 percent (chance). * Mixing height.......6500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (25-36) increasing to poor to fair (116-282) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers and a slight chance of thunderstorms. Lows 50 to 55. Highs 61 to 71. West winds 2 to 7 mph. .WEDNESDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 48 to 53. Highs 64 to 73. West winds 2 to 7 mph. .THURSDAY...Partly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 49 to 54. Highs 66 to 74. West winds 1 to 5 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 50 to 55. Highs 70 to 79. West winds 1 to 6 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 50 to 55. Highs 70 to 79. Southwest winds 1 to 5 mph. $$ ORZ704-072315- Northern Deschutes National Forest- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Mostly cloudy then becoming partly cloudy. A slight chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....75-80...except 62-72 ridges. * Min humidity........36-49 percent...except 47-62 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph becoming west 1 to 6 mph in the afternoon. * CWR.................20 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......7500 ft agl. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor (30-64) increasing to fair (300-452) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A slight chance of showers in the evening. * Min temperature.....45-52. * Max humidity........76-90 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....West winds 2 to 7 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....West 5 to 10 mph. * Ventilation Index...Poor to fair (98-218) decreasing to poor (25-47) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A chance of showers in the morning, then showers and a chance of thunderstorms in the afternoon. * Max temperature.....67-72...except 54-63 ridges. * Min humidity........57-70 percent...except 66-81 percent ridges. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................90 percent. * Chc of lightning....30 percent (chance). * Mixing height.......5500 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Poor (25-34) increasing to poor (29-117) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers and a slight chance of thunderstorms. Lows 42 to 49. Highs 53 to 67. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 41 to 48. Highs 58 to 71. Terrain driven winds less than 5 mph. .THURSDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 42 to 49. Highs 59 to 72. Terrain driven winds less than 5 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 43 to 50. Highs 63 to 76. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a chance of showers. Lows 43 to 50. Highs 63 to 76. Terrain driven winds less than 5 mph. $$ ORZ705-072315- Southern Deschutes National Forest- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Mostly cloudy. Hazy in the afternoon. A chance of showers and thunderstorms in the afternoon. * Max temperature.....71-76...except 62-69 ridges. * Min humidity........39-54 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................30 percent. * Chc of lightning....30 percent (chance). * Mixing height.......8500 ft agl. * Transport winds.....Southwest 5 to 10 mph. * Ventilation Index...Poor (34-62) increasing to fair (308-472) in the afternoon. .TONIGHT... * Sky/weather.........Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening. A slight chance of showers after midnight. * Min temperature.....42-48. * Max humidity........85-100 percent...except 77-89 percent ridges. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....North 5 to 10 mph. * Ventilation Index...Poor (68-156) decreasing to poor (25-28) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A chance of showers in the morning, then showers and a chance of thunderstorms in the afternoon. * Max temperature.....64-69...except 54-63 ridges. * Min humidity........52-67 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph. * Ridges/upr slopes....light less than 5 mph. * CWR.................70 percent. * Chc of lightning....40 percent (chance). * Mixing height.......7500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-47) increasing to poor to good (154-518) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...Showers likely and a chance of thunderstorms. Lows 38 to 45. Highs 55 to 64. Terrain driven winds less than 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 37 to 44. Highs 58 to 66. Terrain driven winds less than 5 mph. .THURSDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 37 to 44. Highs 60 to 68. Terrain driven winds less than 5 mph. .FRIDAY...Partly cloudy with a slight chance of showers. Lows 38 to 46. Highs 64 to 73. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 39 to 46. Highs 64 to 73. Terrain driven winds less than 5 mph. $$ ORZ697-072315- Central Blue Mountains- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....74-79...except 69-75 ridges. * Min humidity........30-37 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming southwest 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......10500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-48) increasing to good to excellent (542-708) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A slight chance of showers and thunderstorms in the evening. Hazy. * Min temperature.....44-51. * Max humidity........76-91 percent. * Humidity recovery...Excellent. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....Northwest winds 1 to 5 mph in the evening becoming light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......Near surface. * Transport winds.....Northwest 5 to 10 mph. * Ventilation Index...Poor to fair (144-220) decreasing to poor (25-51) after midnight. .MONDAY... * Sky/weather.........Partly cloudy then becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. * Max temperature.....71-76...except 66-72 ridges. * Min humidity........28-34 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming south 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming south 2 to 5 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......9500 ft agl. * Transport winds.....Southeast around 5 mph increasing to south around 15 mph in the afternoon. * Ventilation Index...Poor (25-43) increasing to excellent (713-957) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...A chance of showers and a slight chance of thunderstorms. Mostly cloudy. Lows 40 to 47. Highs 60 to 66. West winds 1 to 5 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 39 to 46. Highs 58 to 65. Terrain driven winds less than 5 mph. .THURSDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 39 to 47. Highs 60 to 66. Terrain driven winds less than 5 mph. .FRIDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 40 to 47. Highs 62 to 69. Terrain driven winds less than 5 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 41 to 47. Highs 64 to 71. Terrain driven winds less than 5 mph. $$ ORZ698-072315- Southern Blue Mountains- 625 AM PDT Sun Sep 7 2025 .TODAY... * Sky/weather.........Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. * Max temperature.....74-80. * Min humidity........23-30 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming southwest 2 to 5 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph. * CWR.................0 percent. * Chc of lightning....20 percent (slight chance). * Mixing height.......10500 ft agl. * Transport winds.....South 5 to 10 mph. * Ventilation Index...Poor (25-41) increasing to good to excellent (646-756) in the afternoon. .TONIGHT... * Sky/weather.........Partly cloudy then becoming mostly cloudy. Hazy. * Min temperature.....45-50. * Max humidity........80-95 percent...except 74-83 percent ridges. * Humidity recovery...Excellent...except Good ridges. * 20-foot winds....... * Valleys/lwr slopes...Drainage winds less than 5 mph. * Ridges/upr slopes....light winds less than 5 mph. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......Near surface. * Transport winds.....North around 10 mph. * Ventilation Index...Poor to fair (199-263) decreasing to poor (25-56) after midnight. .MONDAY... * Sky/weather.........Mostly cloudy. A slight chance of showers in the afternoon. * Max temperature.....71-77. * Min humidity........23-29 percent. * 20-foot winds....... * Valleys/lwr slopes...Upslope less than 5 mph becoming south 3 to 6 mph in the afternoon. * Ridges/upr slopes....light less than 5 mph becoming south 3 to 6 mph in the afternoon. * CWR.................0 percent. * Chc of lightning....0 percent. * Mixing height.......9000 ft agl. * Transport winds.....Southeast around 5 mph increasing to south around 15 mph in the afternoon. * Ventilation Index...Poor (25-35) increasing to excellent (712-920) in the afternoon. .Forecast days 3 through 7...... .TUESDAY...A chance of showers and a slight chance of thunderstorms. Partly cloudy. Lows 40 to 46. Highs 63 to 71. West winds 3 to 8 mph. .WEDNESDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 40 to 46. Highs 62 to 68. Northwest winds 1 to 6 mph. .THURSDAY...Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Lows 40 to 46. Highs 64 to 70. Terrain driven winds less than 5 mph. .FRIDAY...A chance of showers. Mostly cloudy. Lows 40 to 46. Highs 67 to 73. West winds 1 to 5 mph. .SATURDAY...Partly cloudy with a slight chance of showers. Lows 42 to 47. Highs 68 to 74. Southwest winds 1 to 5 mph. $$ .8-14 DAY OUTLOOK for Sunday September 14 through Saturday September 20... A greater chance of above normal temperatures and precipitation. $$