National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
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 18%
Wind Speed ESE 12 MPH
Barometer 29.69 in (1005.42 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 May 07:00 PM MDT
Extended Forecast for

Sun Prairie MT

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Patchy smoke between 9pm and 11pm. Cloudy during the early evening, then gradual clearing, with a low around 52. Southeast wind 6 to 11 mph becoming light and variable after midnight. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Increasing clouds, with a high near 90. Light southeast wind becoming east southeast 8 to 13 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 90 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 53. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 84. West wind around 7 mph becoming north in the afternoon. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 52. North northwest wind around 6 mph becoming light and variable after midnight.

    Low: 52 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 55. East wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Calm wind becoming southeast 5 to 8 mph in the afternoon.

    High: 86 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Patchy smoke between 9pm and 11pm. Cloudy during the early evening, then gradual clearing, with a low around 52. Southeast wind 6 to 11 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Increasing clouds, with a high near 90. Light southeast wind becoming east southeast 8 to 13 mph in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Showers and thunderstorms likely before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 53. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Wednesday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 84. West wind around 7 mph becoming north in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A 50 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 52. North northwest wind around 6 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 89. Calm wind becoming east northeast 5 to 8 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 55. East wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Calm wind becoming southeast 5 to 8 mph in the afternoon.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 53.
Saturday
A chance of rain before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 47.
Sunday
A slight chance of rain and thunderstorms. Mostly sunny, with a high near 76.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 46.
Monday
A slight chance of rain. Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sun Prairie MT
 47.52°N 111.47°W (Elev. 3419 ft)
Last Update:
4:27 pm MDT May 25, 2026
Forecast Valid:
7pm MDT May 25, 2026-6pm MDT Jun 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation