FNUS75 KTFX 232304 FWSTFX Spot Forecast for Firework...Wildland fire service National Weather Service Great Falls MT 504 PM MDT Sun Aug 23 2026 Forecast is based on forecast start time of 1700 MDT on August 23. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... In the wake of the thunderstorms that moved through the area, expect winds to initially decrease through the evening before winds pick back up from the west overnight tonight around 0300. Expect poor RH and cooling overnight tonight with the increased winds, with RH values only rising to around 50% as temperatures drop to around 60. Winds remain elevated through the day on Monday, with winds gusting to around 25-30 for most of the day. .REST OF TODAY... Sky/weather.........Partly sunny (55-65 percent). Chance of showers and thunderstorms. CWR.................5 percent. Chance of thunder...31 percent. Max temperature.....92-97. Min humidity........17-22 percent. Wind (20 ft)........ Slope/valley.......Northwest winds around 15 mph. Ridgetop...........West around 20 mph. Mixing height.......7000 ft AGL. Transport winds.....Northwest around 20 mph. TIME (MDT) 5PM Sky (%).........59 Weather cov.....CHC Weather type....RW Tstm cov........CHC CWR.............10 Chc of thdr (%).30 Temp............89 RH..............29 20 FT wind dir..NW 20 FT wind spd..15 20 FT wind gust.25 Ridge wind dir..W Ridge wind spd..20 Mix hgt (kft)...7.0 Transp wind dir.NW Transp wind spd.20 .TONIGHT... Sky/weather.........Mostly cloudy (65-75 percent) then becoming partly cloudy (25-35 percent). CWR.................0 percent. Chance of thunder...5 percent. Min temperature.....57-62. Max humidity........46-51 percent. Wind (20 ft)........ Slope/valley.......West winds 10 to 15 mph. Ridgetop...........West 20 to 25 mph increasing to 30 to 35 mph after 3 am. Mixing height.......500 ft AGL. Transport winds.....West 15 to 20 mph decreasing to 10 to 15 mph early in the evening. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........71 45 23 10 14 15 13 12 16 13 13 18 Weather cov.....SCH Weather type....RW Tstm cov........SCH CWR.............10 10 10 10 10 10 0 0 0 0 0 0 Chc of thdr (%).20 10 0 0 0 0 0 0 0 0 0 0 Temp............86 82 77 72 69 68 67 64 63 62 61 60 RH..............33 37 44 51 51 51 48 48 47 45 44 48 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..15 15 10 10 10 15 15 15 15 15 15 15 20 FT wind gust.25 20 15 15 15 20 25 25 25 25 25 25 Ridge wind dir..W W W NW NW W W W W W W W Ridge wind spd..20 20 20 20 20 20 20 20 25 25 30 35 Mix hgt (kft)...5.0 3.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Transp wind dir.W W W W W W W W W W W W Transp wind spd.20 15 10 10 15 15 15 15 15 15 15 15 .MONDAY... Sky/weather.........Sunny (15-25 percent). CWR.................0 percent. Chance of thunder...0 percent. Max temperature.....81-86. Min humidity........21-26 percent. Wind (20 ft)........ Slope/valley.......Breezy. West winds 15 to 20 mph shifting to the northwest around 25 mph in the afternoon. Ridgetop...........West 35 to 40 mph becoming northwest 25 to 30 mph late in the morning. Mixing height.......8500 ft AGL. Transport winds.....West 15 to 20 mph increasing to around 25 mphin the late morning and afternoon. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........14 34 11 4 2 1 3 5 3 8 7 7 Weather cov..... Weather type.... Tstm cov........ CWR.............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............59 59 61 65 69 72 75 78 80 81 81 82 RH..............50 51 51 50 46 40 35 31 27 26 26 27 20 FT wind dir..W W W W W W W W NW NW NW NW 20 FT wind spd..15 20 20 20 20 20 25 25 25 25 25 25 20 FT wind gust.25 30 30 30 30 30 30 30 35 35 35 30 Ridge wind dir..W W W NW NW NW NW NW NW W W NW Ridge wind spd..40 40 40 35 35 30 30 30 25 25 25 25 Mix hgt (kft)...0.5 1.0 1.5 2.5 4.0 4.5 5.5 7.0 7.5 8.5 8.5 8.5 Transp wind dir.W W W W W W W W W W NW NW Transp wind spd.15 20 20 20 25 25 25 25 25 25 25 25 $$ Forecaster...Ludwig Requested by...Lewistown Dispatch Type of request...WILDFIRE .TAG 2620330.0/TFX .DELDT 08/23/26 .FormatterVersion 2.0.0 .EMAIL mtlec@firenet.gov, tfx.ops@noaa.gov