521 FNUS75 KTFX 281255 FWSTFX Spot Forecast for Sperry...DNRC National Weather Service Great Falls MT 555 AM MST Sat Feb 28 2026 Forecast is based on forecast start time of 0854 MST on February 28. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Northerly winds associated with a Canadian cold front may gust up to around 25 mph this morning before decreasing in the afternoon. Temperatures behind the front are falling into the 20s, but look to warm again into the 30s and 40s this afternoon as the frontal boundary undergoes dissipation and retreats northward. Light winds are generally expected tonight and on Sunday. .REST OF TODAY... Sky/weather.........Partly sunny (25-45 percent). CWR.................0 percent. Chance of thunder...0 percent. Max temperature.....38-43. Min humidity........35-40 percent. Wind (20 ft)........ Slope/valley.......Northerly winds 10 to 15 mph with gusts up to 25 mph this morning Winds decrease to around 5 to 10 mph in the afternoon. Ridgetop...........Northwest 15 to 25 mph. Mixing height.......2000 ft AGL. Transport winds.....Northwest around 10 mph. TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........38 38 34 30 35 25 27 20 23 30 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 Temp............29 31 30 31 35 37 39 40 39 40 RH..............62 57 56 52 48 43 40 40 40 40 20 FT wind dir..N N N N N N N N N NW 20 FT wind spd..10 5 5 5 5 5 5 5 5 5 20 FT wind gust.15 20 20 20 20 15 10 10 10 10 Ridge wind dir..NW NW NW NW NW NW NW NW NW NW Ridge wind spd..25 20 20 25 25 25 25 25 25 20 Mix hgt (kft)...0.5 1.0 1.0 1.5 1.5 2.0 2.0 1.5 1.0 1.0 Transp wind dir.NW NW NW NW NW NW NW NW NW NW Transp wind spd.10 10 10 10 10 10 10 10 10 10 .TONIGHT... Sky/weather.........Partly cloudy (35-50 percent) CWR.................0 percent. Chance of thunder...0 percent. Min temperature.....24-29. Max humidity........60-65 percent. Wind (20 ft)........ Slope/valley.......Winds becoming light and variable Ridgetop...........West 15 to 20 mph Mixing height.......0 ft AGL. Transport winds.....West around 10 to 15 mph TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........31 36 32 36 41 44 53 55 44 35 41 42 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............38 33 32 31 30 29 29 28 28 28 28 27 RH..............42 47 52 55 58 60 60 61 63 65 64 64 20 FT wind dir..N N N NW N W SW SW SW SW S S 20 FT wind spd..5 5 5 5 5 0 0 0 0 0 0 5 20 FT wind gust.15 10 10 10 10 5 5 5 5 5 10 10 Ridge wind dir..W W W W W W W W W W W W Ridge wind spd..20 20 25 25 25 30 30 30 30 30 30 30 Mix hgt (kft)...0.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Transp wind dir.NW W W W W W W W W W SW SW Transp wind spd.5 5 5 5 5 5 5 5 5 5 5 5 .SUNDAY... Sky/weather.........Mostly sunny (45-55 percent). CWR.................0 percent. Chance of thunder...0 percent. Max temperature.....48-53. Min humidity........28-33 percent. Wind (20 ft)........ Slope/valley.......South winds 5 to 10 mph. Ridgetop...........West 10 to 20 mph Mixing height.......3500 ft AGL. Transport winds.....Southwest to west 5 to 15 mph TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........42 42 55 55 55 43 43 43 46 46 46 44 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............28 28 30 33 37 41 44 47 48 50 50 49 RH..............63 63 63 59 52 44 39 35 33 32 33 35 20 FT wind dir..S S S S S S S S S S S SW 20 FT wind spd..5 5 5 5 5 10 10 10 10 10 10 5 20 FT wind gust.10 10 10 10 10 15 15 15 15 15 15 15 Ridge wind dir..W W W W W W W W W W W W Ridge wind spd..25 20 15 20 20 20 20 20 15 20 20 25 Mix hgt (kft)...0.1 0.1 0.1 0.5 1.0 1.5 2.5 3.0 3.5 3.0 2.5 2.0 Transp wind dir.SW SW SW S SW SW SW SW SW SW W W Transp wind spd.5 5 10 10 10 10 15 15 15 15 15 15 $$ Forecaster...Greely Requested by...IC Type of request...WILDFIRE .TAG 2604236.1/TFX .DELDT 02/28/26 .FormatterVersion 2.0.0 .EMAIL mthdc@firenet.gov, tfx.ops@noaa.gov