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

72°F

22°C

Humidity 18%
Wind Speed SW 14 MPH
Barometer 29.86 in (1011.18 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Apr 01:53 PM MDT
Extended Forecast for

Sun Prairie MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. West southwest wind 7 to 10 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 41. West wind 6 to 11 mph becoming light southwest after midnight.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. East wind 5 to 11 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 73. Southwest wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%.

    High: 73 °F

    Mostly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain before 3am, then rain and snow. Some thunder is also possible. Low around 33. Breezy, with a northwest wind around 22 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Breezy.
    Showers then
    Rain/Snow

  • Thursday

    Thursday: Rain, possibly mixed with snow, becoming all snow after 9am. High near 44. Breezy, with a north northwest wind 21 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Breezy.
    Rain/Snow
    then Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 26. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    Low: 26 °F

    Chance Snow

  • Friday

    Friday: A chance of snow. Partly sunny, with a high near 44.

    High: 44 °F

    Chance Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 77. West southwest wind 7 to 10 mph.
Tonight
Partly cloudy, with a low around 41. West wind 6 to 11 mph becoming light southwest after midnight.
Tuesday
Mostly sunny, with a high near 84. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 43. East wind 5 to 11 mph becoming south southwest after midnight. Winds could gust as high as 18 mph.
Wednesday
Rain likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 73. Southwest wind 5 to 10 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%.
Wednesday Night
Rain before 3am, then rain and snow. Some thunder is also possible. Low around 33. Breezy, with a northwest wind around 22 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday
Rain, possibly mixed with snow, becoming all snow after 9am. High near 44. Breezy, with a north northwest wind 21 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 26. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Friday
A chance of snow. Partly sunny, with a high near 44.
Friday Night
Mostly cloudy, with a low around 22.
Saturday
Partly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sun Prairie MT
 47.54°N 111.5°W (Elev. 3399 ft)
Last Update:
12:31 pm MDT Apr 20, 2026
Forecast Valid:
2pm MDT Apr 20, 2026-6pm MDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation