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

66°F

19°C

Humidity 29%
Wind Speed WSW 8 MPH
Barometer 29.82 in (1009.82 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 23 May 08:20 PM MDT
Extended Forecast for

Sun Prairie MT

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Southwest wind 6 to 8 mph.

    Low: 43 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 83. West wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 83 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. South southwest wind 5 to 15 mph, with gusts as high as 26 mph.

    Low: 46 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 90. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 53. South southeast wind 6 to 11 mph.

    Low: 53 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Light and variable wind becoming east northeast 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 86 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before midnight, then a chance of rain after midnight. Low around 49. North wind 8 to 13 mph becoming west northwest in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 49 °F

    Showers then
    Chance Rain

  • Wednesday

    Wednesday: Rain likely before noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 70. North northwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 70 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. Southwest wind 6 to 8 mph.
Sunday
Sunny, with a high near 83. West wind 7 to 12 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Mostly clear, with a low around 46. South southwest wind 5 to 15 mph, with gusts as high as 26 mph.
Memorial Day
Sunny, with a high near 90. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 53. South southeast wind 6 to 11 mph.
Tuesday
A 50 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 86. Light and variable wind becoming east northeast 6 to 11 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Showers and possibly a thunderstorm before midnight, then a chance of rain after midnight. Low around 49. North wind 8 to 13 mph becoming west northwest in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Wednesday
Rain likely before noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 70. North northwest wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of rain after midnight. Mostly cloudy, with a low around 48.
Thursday
A slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 75.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 50.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 79.
Friday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 50.
Saturday
Rain likely and possibly a thunderstorm. Partly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sun Prairie MT
 47.54°N 111.47°W (Elev. 3399 ft)
Last Update:
7:01 pm MDT May 23, 2026
Forecast Valid:
8pm MDT May 23, 2026-6pm MDT May 30, 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