368 FNUS55 KPSR 092134 FWFPSR Fire Weather Planning Forecast for Southwest and South-Central Arizona and Southeast California National Weather Service Phoenix AZ 234 PM MST Wed Jul 9 2025 .DISCUSSION... Regionally dry conditions and above normal temperatures will persist through the end of the week as lower deserts highs reach 110-118 degrees today and tomorrow and then 105-110 Friday. MinRH values will range from 10-20% through Friday day, while MaxRH values will be the lowest tonight at 20-40% before increasing up to 30-50% the following days. One exception will be across Imperial and southern Yuma Counties where gulf surges will result in MaxRH values in excess of 50-60% starting tomorrow night. The overall wind pattern will follow the familiar diurnal trends today, with some afternoon/early evening breeziness with 15-25 mph peak gusts. An uptick in the winds is expected tomorrow and Friday afternoons with 25-35 mph peak gusts. This may lead to locally elevated fire weather conditions tomorrow, while a low level moisture increase Friday will keep MinRHs above critical level (15%). Very low rain chances will exist through Friday, with activity focused mainly across the eastern and southeastern third of AZ, with CWR <10%. ...Thunderstorms imply gusty winds... Note...Additional Fire Weather Forecast information can be found in the Area Forecast Discussion. See product PHXAFDPSR. AZZ132-100945- West Central Deserts/Northwest Maricopa County/Greater Phoenix Area/Southwest Deserts/Southwest Maricopa County/ Northwest and North-Central Pinal County- Phoenix BLM/YUM BLM/CAZ-CRZ- 234 PM MST Wed Jul 9 2025 .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................83-93. * 24 hr trend..................Little change. * Max Humidity....................21-40 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............West 10 to 15 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. .THURSDAY... * Sky/weather.....................Sunny. * Max Temperature.................107-113. * 24 hr trend..................4 degrees cooler. * Min Humidity....................12-20 pct. * 24 hr trend..................4 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 10 to 20 mph. * Winds...10000 FT MSL............West 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. * Mixing Height for Phoenix.......10600 ft AGL. * Transport Wind for Phoenix......West 17 knots. * Dispersion for Phoenix..........Excellent. .THURSDAY NIGHT... * Sky/weather.....................Clear. * Min Temperature.................81-91. * 24 hr trend..................Little change. * Max Humidity....................42-57 pct. * 24 hr trend..................18 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............West 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................102-109. * 24 hr trend..................4 degrees cooler. * Min Humidity....................17-24 pct. * 24 hr trend..................5 pct wetter. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............West 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Phoenix.......10000 ft AGL. * Transport Wind for Phoenix......West 13 knots. * Dispersion for Phoenix..........Excellent. .EXTENDED... .SATURDAY...Clear. Lows 76-86. Highs 101-108. South winds 5 to 15 mph. .SUNDAY...Clear. Lows 76-86. Highs 102-108. Southwest winds 5 to 15 mph. .MONDAY...Mostly clear. Lows 76-86. Highs 102-108. Southwest winds 10 to 20 mph. .TUESDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 78-88. Highs 102-107. .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 78-88. Highs 101-106. $$ AZZ131-CAZ231-100945- Yuma/Martinez Lake and Vicinity/Lower Colorado River Valley AZ- Lower Colorado River Valley CA- 234 PM MST Wed Jul 9 2025 /234 PM PDT Wed Jul 9 2025/ .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................82-87. * 24 hr trend..................Little change. * Max Humidity....................22-50 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............West 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. .THURSDAY... * Sky/weather.....................Sunny. * Max Temperature.................110-116. * 24 hr trend..................4 degrees cooler. * Min Humidity....................10-23 pct. * 24 hr trend..................4 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 10 to 20 mph. * Winds...10000 FT MSL............West 20 to 30 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............1 percent. * Mixing Height for Yuma..........5100 ft AGL. * Transport Wind for Yuma.........South 14 knots. * Dispersion for Yuma.............Good. .THURSDAY NIGHT... * Sky/weather.....................Clear. * Min Temperature.................80-85. * 24 hr trend..................Little change. * Max Humidity....................52-70 pct. * 24 hr trend..................28 pct wetter. * Winds - 20 foot...Slope/Valley..South 10 to 20 mph. * Winds...10000 FT MSL............West 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................107-112. * 24 hr trend..................3 degrees cooler. * Min Humidity....................13-22 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..South 10 to 20 mph. * Winds...10000 FT MSL............West 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. * Mixing Height for Yuma..........6000 ft AGL. * Transport Wind for Yuma.........South 14 knots. * Dispersion for Yuma.............Good. .EXTENDED... .SATURDAY...Clear. Lows 76-81. Highs 104-109. South winds 10 to 20 mph. .SUNDAY...Clear. Lows 76-81. Highs 105-110. South winds 10 to 20 mph. .MONDAY...Mostly clear. Lows 77-82. Highs 105-110. South winds 10 to 20 mph. .TUESDAY...Mostly clear. Lows 77-82. Highs 104-109. .WEDNESDAY...Mostly clear. Lows 77-82. Highs 103-108. $$ AZZ133-100945- Southern Gila County/Tonto National Forest Foothills- Southern Tonto NF/West San Carlos BIA/South Portion Ft Apache BIA/ CAZ- 234 PM MST Wed Jul 9 2025 .TONIGHT... * Sky/weather.....................Mostly clear. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................69-85. * 24 hr trend..................Little change. * Max Humidity....................26-39 pct. * 24 hr trend..................5 pct drier. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph in the evening becoming north 5 to 10 mph after midnight. * Winds...10000 FT MSL............Northwest 10 to 20 mph. * Chance of Precip................20 percent in the evening becoming 0 percent after midnight. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............15 percent. .THURSDAY... * Sky/weather.....................Sunny. * Max Temperature.................95-109. * 24 hr trend..................3 degrees cooler. * Min Humidity....................12-17 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the morning becoming west 10 to 20 mph in the afternoon. * Winds...10000 FT MSL............West 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............3 percent. .THURSDAY NIGHT... * Sky/weather.....................Clear. Slight chance of showers and thunderstorms in the evening. * Min Temperature.................69-85. * 24 hr trend..................Little change. * Max Humidity....................38-53 pct. * 24 hr trend..................13 pct wetter. * Winds - 20 foot...Slope/Valley..West 10 to 20 mph in the evening becoming 5 to 10 mph after midnight. * Winds...10000 FT MSL............West 20 to 30 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............6 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................92-105. * 24 hr trend..................4 degrees cooler. * Min Humidity....................16-24 pct. * 24 hr trend..................6 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 10 mph in the morning becoming west 10 to 20 mph in the afternoon. * Winds...10000 FT MSL............West 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............2 percent. .EXTENDED... .SATURDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 64-80. Highs 90-104. West winds 10 to 20 mph. .SUNDAY...Mostly clear with slight chance of showers and thunderstorms. Lows 63-80. Highs 90-104. West winds 10 to 20 mph. .MONDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 63-80. Highs 89-103. Southwest winds 10 to 20 mph. .TUESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 63-80. Highs 89-103. .WEDNESDAY...Partly cloudy with slight chance of showers and thunderstorms. Lows 64-80. Highs 89-103. $$ CAZ232-100945- Imperial County And Eastern Riverside County- 234 PM PDT Wed Jul 9 2025 .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................83-90. * 24 hr trend..................Little change. * Max Humidity....................15-41 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Southwest 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .THURSDAY... * Sky/weather.....................Sunny. * Max Temperature.................106-117. * 24 hr trend..................Little change. * Min Humidity....................7-16 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............Southwest 20 to 30 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .THURSDAY NIGHT... * Sky/weather.....................Clear. * Min Temperature.................80-86. * 24 hr trend..................4 degrees cooler. * Max Humidity....................21-70 pct. * 24 hr trend..................20 pct wetter. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............West 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................103-113. * 24 hr trend..................3 degrees cooler. * Min Humidity....................8-16 pct. * 24 hr trend..................Little change. * Winds - 20 foot...Slope/Valley..South 5 to 15 mph. * Winds...10000 FT MSL............West 15 to 25 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .SATURDAY...Clear. Lows 75-82. Highs 100-110. South winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .SUNDAY...Clear. Lows 75-82. Highs 101-110. South winds 5 to 15 mph. .MONDAY...Clear. Lows 76-84. Highs 101-111. South winds 10 to 20 mph. .TUESDAY...Mostly clear. Lows 77-84. Highs 100-109. .WEDNESDAY...Mostly clear. Lows 76-83. Highs 98-108. $$ CAZ230-100945- Joshua Tree National Park- 234 PM PDT Wed Jul 9 2025 .TONIGHT... * Sky/weather.....................Clear. * Min Temperature.................73-84. * 24 hr trend..................Little change. * Max Humidity....................17-21 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .THURSDAY... * Sky/weather.....................Sunny. * Max Temperature.................97-110. * 24 hr trend..................Little change. * Min Humidity....................6-10 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Southwest 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .THURSDAY NIGHT... * Sky/weather.....................Clear. * Min Temperature.................72-82. * 24 hr trend..................Little change. * Max Humidity....................13-19 pct. * 24 hr trend..................3 pct drier. * Winds - 20 foot...Slope/Valley..West 5 to 15 mph. * Winds...10000 FT MSL............Light and variable in the evening becoming southwest 5 to 15 mph after midnight. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .FRIDAY... * Sky/weather.....................Sunny. * Max Temperature.................93-107. * 24 hr trend..................3 degrees cooler. * Min Humidity....................8-12 pct. * 24 hr trend..................Little RH change. * Winds - 20 foot...Slope/Valley..Southwest 5 to 15 mph. * Winds...10000 FT MSL............West 10 to 20 mph. * Chance of Precip................0 percent. * CWR (>= 0.10 IN)................0 percent. * Chance of Thunder...............0 percent. .EXTENDED... .SATURDAY...Clear. Lows 69-79. Highs 91-105. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .SUNDAY...Clear. Lows 69-80. Highs 92-106. Southwest winds 5 to 15 mph. Minimum relative humidity may be lower than 15 percent. .MONDAY...Clear. Lows 69-80. Highs 92-106. Southwest winds 10 to 20 mph. Minimum relative humidity may be lower than 15 percent. .TUESDAY...Mostly clear. Lows 69-80. Highs 91-105. .WEDNESDAY...Mostly clear. Lows 69-79. Highs 89-103. $$ .8 TO 10 DAY OUTLOOK...Thursday July 17th through Saturday July 19th: Near normal temperatures and above median precipitation.