Spot Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
989
FNUS75 KTFX 240103
FWSTFX
Spot Forecast for Sawmill...Lewistown Dispatch
National Weather Service Great Falls MT
703 PM MDT Sun Aug 23 2026
Forecast is based on forecast start time of 1900 MDT on August 23.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
Thunderstorms have ended for the evening, leaving clearing skies
and winds that will gradually weaken this evening. While winds
will generally be under 10 mph overnight, expect winds to increase
again Monday morning, with gusts to around 20 mph from the
northwest during the late morning and afternoon hours. While RH
recovery will be rather poor overnight tonight (only reaching
around 45%), RH recovery will be better Monday night (around 60%)
thanks to light winds and clear skies tomorrow night. Tuesday
will bring largely tranquil weather with light winds and clear
skies.
.REST OF TONIGHT...
Sky/weather.........Mostly clear (10-20 percent).
CWR.................5 percent.
Chance of thunder...11 percent.
Min temperature.....56-61.
Max humidity........42-47 percent.
Wind (20 ft)........
Slope/valley.......West winds 5 to 10 mph becoming around 5 mph in
the late evening and overnight.
Ridgetop...........Northwest 20 to 25 mph increasing to west
around 40 mph.
Mixing height.......500 ft AGL.
Transport winds.....West 10 to 15 mph.
TIME (MDT) 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........18 13 11 15 9 14 10 11 10 14 12
Weather cov.....
Weather type....
Tstm cov........
CWR.............10 10 10 10 10 0 0 0 0 0 0
Chc of thdr (%).10 0 0 0 0 0 0 0 0 0 0
Temp............82 78 74 71 70 68 65 63 61 60 59
RH..............35 39 44 45 44 45 44 44 44 46 47
20 FT wind dir..W W SW W W W W W W W W
20 FT wind spd..10 5 5 5 5 5 5 5 5 5 5
20 FT wind gust.15 15 15 15 10 15 10 10 10 10 10
Ridge wind dir..NW NW NW NW W W W W W W W
Ridge wind spd..25 25 20 20 20 25 30 35 40 40 40
Mix hgt (kft)...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 NW W NW W W W W
Transp wind spd.15 10 10 10 15 15 15 15 15 15 15
.MONDAY...
Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....81-86.
Min humidity........19-24 percent.
Wind (20 ft)........
Slope/valley.......West winds 5 to 10 mph shifting to the
northwest around 15 mph in the late morning and
afternoon.
Ridgetop...........West 35 to 40 mph becoming northwest 15 to 20
mph.
Mixing height.......7500 ft AGL.
Transport winds.....West 15 to 20 mph.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........10 27 12 2 2 3 0 3 6 9 16 12
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............58 58 61 65 71 74 76 79 81 81 83 82
RH..............47 47 43 37 33 32 29 27 26 24 24 24
20 FT wind dir..W W W W W NW NW NW NW NW NW NW
20 FT wind spd..5 5 10 10 15 15 15 15 15 15 15 15
20 FT wind gust.10 15 15 15 20 20 20 20 20 20 20 20
Ridge wind dir..W W W W W W NW NW W W NW NW
Ridge wind spd..40 35 35 30 25 20 20 15 15 15 15 15
Mix hgt (kft)...0.5 0.5 1.0 3.0 4.5 5.5 6.0 6.5 7.0 7.5 7.5 7.0
Transp wind dir.W W W W W W W W W W W NW
Transp wind spd.15 15 15 20 20 20 20 20 20 20 20 20
.MONDAY NIGHT...
Sky/weather.........Mostly clear (15-25 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....52-57.
Max humidity........62-67 percent.
Wind (20 ft)........
Slope/valley.......Northwest winds 5 to 10 mph in the evening
becoming light.
Ridgetop...........Northwest 10 to 15 mph decreasing to around 5
mph overnight.
Mixing height.......500 ft AGL.
Transport winds.....Northwest 15 to 20 mph shifting to the north
around 10 mph early in the evening, then
shifting to the east overnight shifting to the
west after 3 am shifting to the south.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........14 14 14 25 25 25 27 27 27 22 22 22
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............81 80 76 70 68 66 64 62 60 58 56 55
RH..............26 27 33 38 40 42 46 48 52 57 61 65
20 FT wind dir..NW NW NW NW NW NW SW SW SW SW SW SW
20 FT wind spd..10 10 10 5 5 5 0 0 0 0 0 0
20 FT wind gust.20 20 20 10 10 10 5 5 5 5 5 5
Ridge wind dir..NW NW NW NW NW W W W NW NW NW NW
Ridge wind spd..15 15 10 10 10 10 10 5 5 5 5 5
Mix hgt (kft)...7.0 5.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.NW NW N N N N N E E W S S
Transp wind spd.20 15 10 10 10 10 10 10 10 5 5 5
.TUESDAY...
Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....83-88.
Min humidity........19-24 percent.
Wind (20 ft)........
Slope/valley.......Light winds becoming north around 5 mph in the
afternoon.
Ridgetop...........Northwest around 5 mph shifting to the east
late in the afternoon.
Mixing height.......7000 ft AGL.
Transport winds.....Southwest around 5 mph shifting to the
northwest late in the morning, then shifting to
the north in the afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........44 44 44 11 11 11 4 4 4 8 8 8
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............54 54 58 63 68 73 77 80 82 84 85 86
RH..............67 67 60 51 44 38 33 29 27 25 24 23
20 FT wind dir..SW SW SW W W W N N N N N N
20 FT wind spd..0 0 0 0 0 0 5 5 5 5 5 5
20 FT wind gust.5 5 5 5 5 5 10 10 10 10 10 10
Ridge wind dir..NW NW W SW SW S S S S S SE E
Ridge wind spd..5 5 0 0 0 5 5 5 5 0 0 0
Mix hgt (kft)...0.5 0.5 0.5 1.0 2.0 3.5 4.5 5.5 6.5 7.0 7.0 6.5
Transp wind dir.S S SW SW W NW N N N N N N
Transp wind spd.5 5 5 5 5 5 5 5 5 10 10 10
$$
Forecaster...Ludwig
Requested by...Lewistown Dispatch
Type of request...WILDFIRE
.TAG 2620336.0/TFX
.DELDT 08/23/26
.FormatterVersion 2.0.0
.EMAIL mtlec@firenet.gov, tfx.ops@noaa.gov