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Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

Lat: 47.47333°NLon: 111.38222°WElev: 3675.0ft.

Clear

82°F

28°C

Humidity 25%
Wind Speed SSW 6 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 20 Aug 11:53 AM MDT
Extended Forecast for

Great Falls MT

  • This Afternoon

    This Afternoon: Patchy smoke before 2pm. Sunny, with a high near 93. West wind 7 to 9 mph, with gusts as high as 20 mph.

    High: 93 °F

    Patchy Smoke

  • Tonight

    Tonight: Patchy smoke between 11pm and 4am. Mostly clear, with a low around 57. North northwest wind 5 to 8 mph becoming southeast after midnight.

    Low: 57 °F

    Patchy Smoke

  • Friday

    Friday: Mostly sunny, with a high near 89. West wind 5 to 7 mph becoming calm.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. East northeast wind 5 to 9 mph becoming calm after midnight.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 92. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 92 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 60. South southwest wind around 8 mph. Chance of precipitation is 20%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90. Breezy, with a south southwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.

    High: 90 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. West wind 16 to 21 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

This Afternoon
Patchy smoke before 2pm. Sunny, with a high near 93. West wind 7 to 9 mph, with gusts as high as 20 mph.
Tonight
Patchy smoke between 11pm and 4am. Mostly clear, with a low around 57. North northwest wind 5 to 8 mph becoming southeast after midnight.
Friday
Mostly sunny, with a high near 89. West wind 5 to 7 mph becoming calm.
Friday Night
Partly cloudy, with a low around 59. East northeast wind 5 to 9 mph becoming calm after midnight.
Saturday
Partly sunny, with a high near 92. Calm wind becoming east southeast around 6 mph in the afternoon.
Saturday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 60. South southwest wind around 8 mph. Chance of precipitation is 20%.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 90. Breezy, with a south southwest wind 7 to 12 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 33 mph.
Sunday Night
Mostly clear, with a low around 55. West wind 16 to 21 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Falls MT
 47.51°N 111.31°W (Elev. 3399 ft)
Last Update:
10:01 am MDT Aug 20, 2026
Forecast Valid:
12pm MDT Aug 20, 2026-6pm MDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation