583 FNUS73 KBIS 291409 FWSBIS Spot Forecast for Mandan...Mandan Fire National Weather Service Bismarck ND 909 AM CDT Mon Sep 29 2025 Forecast is based on forecast start time of 1000 CDT on September 29. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Today with be warm with a high of 85 degrees. Winds this morning are northeast around 5mph, these will increase to 20mph by 2pm. Wind direction will turn to the southeast by 1pm. Winds will stay around 20mph this evening and possibly overnight from the southeast. .REST OF TODAY... Sky/weather.........Mostly sunny. Chance of pcpn......10 percent. Chance of thunder...8 percent. Max temperature.....Around 85. Min humidity........49 percent. Max apparent temp...84. Surface winds.......Light winds becoming southeast 10 mph with gusts to around 20 mph in the afternoon. Transport winds.....East 10 to 15 mph shifting to the southeast 15 to 17 mph late in the afternoon. Smoke dispersal.....Poor (7600 knot-ft) early in the morning increasing to fair (49200 knot-ft) in the afternoon. Smoke dispersal.....Poor (7600 knot-ft) early in the morning increasing to fair (49200 knot-ft) in the afternoon. Snowfall amount.....0.0 inches. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........20 21 26 28 34 29 30 35 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 10 10 10 10 10 Chc of thdr (%).0 0 0 10 10 10 10 10 Temp............62 68 74 78 81 82 83 83 RH..............81 74 66 56 53 51 49 49 Aparnt tmp (F)..62 68 74 78 82 83 84 84 Surface wnd dir.NE E E SE SE SE SE SE Surface wnd spd.2 6 9 11 11 11 12 12 Surface wnd gst.10 14 17 19 20 20 21 20 Transp wind dir.E E E E SE SE SE SE Transp wind spd.10 12 12 14 14 15 17 15 Vrate kt-ft/1K..8 13 16 27 32 40 49 40 Ventrate Cat....PR PR PR PR PR PR FR PR Dispr kt-ft/1K..8 13 16 27 32 40 49 40 .TONIGHT... Sky/weather.........Partly cloudy then becoming mostly cloudy then becoming partly cloudy. Chance of pcpn......10 percent. Chance of thunder...8 percent. Min temperature.....Around 63. Max humidity........73 percent. Max apparent temp...82. Surface winds.......Southeast winds 9 to 12 mph. Gusts up to 20 mph early in the evening then 21 mph overnight. Transport winds.....Southeast 10 to 15 mph. Smoke dispersal.....Poor (6000 knot-ft). Smoke dispersal.....Poor (6000 knot-ft). Snowfall amount.....0.0 inches. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........41 54 66 61 47 48 46 46 46 40 47 44 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).10 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).10 0 0 0 0 0 0 0 0 0 0 0 Temp............81 78 75 72 70 69 68 68 67 66 66 65 RH..............51 56 62 66 71 73 73 68 68 68 65 68 Aparnt tmp (F)..82 78 75 72 70 69 68 68 67 66 66 65 Surface wnd dir.SE SE SE E E E SE SE SE SE SE SE Surface wnd spd.11 11 9 11 11 11 11 11 11 12 12 12 Surface wnd gst.20 17 17 18 18 18 18 20 20 20 20 21 Transp wind dir.SE SE SE SE E SE SE SE S S S S Transp wind spd.13 10 12 14 14 14 15 15 15 15 15 15 Vrate kt-ft/1K..15 8 6 7 7 7 8 8 8 8 8 8 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR Dispr kt-ft/1K..15 8 6 7 7 7 8 8 8 8 8 8 .TUESDAY... Sky/weather.........Mostly sunny. Chance of pcpn......0 percent. Chance of thunder...4 percent. Max temperature.....Around 84. Min humidity........44 percent. Max apparent temp...83. Surface winds.......Southeast winds 12 to 19 mph with gusts to around 29 mph. Transport winds.....South 14 to 23 mph increasing to 24 to 29 mph in the afternoon. Smoke dispersal.....Poor (7200 knot-ft) early in the morning increasing to good (90200 knot-ft) in the afternoon increasing to good (89400 knot-ft) early in the morning increasing to very good (115500 knot-ft) in the afternoon late in the afternoon. Smoke dispersal.....Poor (7200 knot-ft) early in the morning increasing to good (90200 knot-ft) in the afternoon increasing to good (89400 knot-ft) early in the morning increasing to very good (115500 knot-ft) in the afternoon late in the afternoon. Snowfall amount.....0.0 inches. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........39 41 44 29 27 13 13 13 14 14 15 12 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............64 63 63 65 69 73 77 80 82 83 83 82 RH..............70 70 72 73 68 62 56 51 47 44 44 46 Aparnt tmp (F)..64 63 63 65 69 73 77 81 82 83 83 82 Surface wnd dir.SE SE SE SE SE SE SE SE SE SE SE SE Surface wnd spd.12 12 13 14 14 15 16 18 19 19 19 18 Surface wnd gst.21 21 23 24 25 26 28 29 29 29 28 26 Transp wind dir.S S S S S S S S S S S S Transp wind spd.14 14 16 18 22 23 24 26 28 29 29 26 Vrate kt-ft/1K..8 7 13 20 31 40 53 68 90 111 116 89 Ventrate Cat....PR PR PR PR PR FR FR GD GD VGD VGD GD Dispr kt-ft/1K..8 7 13 20 31 40 53 68 90 111 116 89 $$ Forecaster...SMITH Requested by...Erik Type of request...HAZMAT .TAG 2522707.0/BIS .DELDT 09/29/25 .FormatterVersion 2.0.0 .EMAIL erik.short@cityofmandan.com