FNUS75 KTFX 182029 FWSTFX Spot Forecast for Holm Rx...WFS-FWS National Weather Service Great Falls MT 229 PM MDT Sat Apr 18 2026 Forecast is based on ignition time of 0500 MDT on April 19. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Dry and quiet conditions are expected through Tuesday. Overall, winds will be on the lighter side, but do expect some gusts around 20 mph in the afternoon. The next chance for precipitation is late Wed into Wed night. .SUNDAY... Sky/weather.........Sunny (15-25 percent). CWR.................0 percent. Chance of thunder...0 percent. Max temperature.....65-70. Min humidity........18-23 percent. Wind (20 ft)........ Slope/valley.......Southeast winds 5 to 10 mph shifting to the southwest late in the afternoon. Mixing height.......6000 ft AGL. Transport winds.....Southeast 10 to 15 mph shifting to the southwest in the afternoon. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........9 13 16 9 5 8 6 4 12 21 33 40 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............30 29 33 37 44 49 53 57 60 64 65 66 RH..............82 81 76 65 57 50 41 37 31 27 25 23 20 FT wind dir..E E SE SE SE SE S S S SW SW SW 20 FT wind spd..10 10 5 5 5 5 5 10 10 10 10 10 20 FT wind gust.15 15 10 15 10 10 15 15 15 15 15 15 Mix hgt (kft)...0.5 0.5 0.5 1.0 1.5 2.0 3.0 4.0 5.0 5.5 6.0 6.0 Transp wind dir.SE SE SE SE S S S SW SW SW SW SW Transp wind spd.15 15 15 15 10 10 10 10 10 10 15 15 .SUNDAY NIGHT... Sky/weather.........Mostly cloudy (50-60 percent). CWR.................0 percent. Chance of thunder...0 percent. Min temperature.....34-39. Max humidity........66-71 percent. Wind (20 ft)........ Slope/valley.......Southwest winds around 10 mph shifting to the south in the late evening and overnight, then shifting to the west after 3 am. Mixing height.......100 ft AGL. Transport winds.....Southwest 10 to 15 mph shifting to the west overnight, then shifting to the northwest early in the morning. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........57 57 57 33 33 33 40 40 40 38 38 38 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............67 63 59 54 51 48 46 44 42 40 38 37 RH..............23 27 32 37 42 47 52 56 60 63 67 69 20 FT wind dir..SW SW SW S S S S S S W W W 20 FT wind spd..10 10 10 5 5 5 5 5 5 5 5 5 20 FT wind gust.15 15 15 10 10 10 10 10 10 10 10 10 Mix hgt (kft)...5.5 2.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Transp wind dir.SW SW S S S SW SW SW W W W NW Transp wind spd.15 10 10 10 15 15 15 15 15 15 15 10 .MONDAY... Sky/weather.........Sunny (15-25 percent). CWR.................0 percent. Chance of thunder...0 percent. Max temperature.....70-75. Min humidity........22-27 percent. Wind (20 ft)........ Slope/valley.......West winds around 5 mph shifting to thenorthwest late in the morning, then shifting to the north early in the afternoon shifting to the southwest late in the afternoon. Mixing height.......6500 ft AGL. Transport winds.....Northwest around 10 mph shifting to the north in the late morning and early afternoon, then shifting to the west late in the afternoon. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........30 30 30 17 17 17 6 6 6 5 5 5 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............37 38 41 46 51 57 62 66 68 70 71 72 RH..............70 68 63 58 53 48 43 38 34 31 28 27 20 FT wind dir..W W W NW NW NW N N N SW SW SW 20 FT wind spd..5 5 5 5 5 5 5 5 5 5 5 5 20 FT wind gust.10 10 10 10 10 10 10 10 10 Mix hgt (kft)...0.5 0.5 0.5 1.0 2.0 2.5 3.5 4.5 5.0 5.5 6.0 6.5 Transp wind dir.NW NW N N N N N NW W W W SW Transp wind spd.10 10 10 10 10 5 5 5 5 10 10 10 $$ Forecaster...Brusda Requested by...Schell Type of request...PRESCRIBED .TAG 2610685.0/TFX .DELDT 04/18/26 .FormatterVersion 2.0.0 .EMAIL andrew_schell@fws.gov