National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall for Portions of the West and Central U.S.; Monitoring Fire Weather Conditions for New England

Tropical moisture continues to flow across portions of the Great Basin, desert Southwest and California. Isolated instances of flash flooding remains possible. Meanwhile, a storm and associated frontal boundary will focus showers and thunderstorms for the center of the nation. For New England, dry and breezy conditions could enhance favorable fire weather conditions. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

88°F

31°C

Humidity 14%
Wind Speed W 19 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 20 Sep 04:20 PM MDT
Extended Forecast for

Great Falls MT

  • Tonight

    Tonight: Partly cloudy, with a low around 52. Southwest wind 6 to 9 mph.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain after 5pm. Increasing clouds, with a high near 85. Southwest wind 8 to 17 mph, with gusts as high as 26 mph.

    High: 85 °F

    Sunny then
    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 49. West southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 49 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 69. West wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 69 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Clear, with a low around 42. Northwest wind around 6 mph becoming south southeast in the evening.

    Low: 42 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81. South southwest wind 6 to 8 mph.

    High: 81 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 48. South wind 5 to 7 mph.

    Low: 48 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. South southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 47.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 52. Southwest wind 6 to 9 mph.
Sunday
A 20 percent chance of rain after 5pm. Increasing clouds, with a high near 85. Southwest wind 8 to 17 mph, with gusts as high as 26 mph.
Sunday Night
Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 49. West southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 69. West wind 8 to 13 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 42. Northwest wind around 6 mph becoming south southeast in the evening.
Tuesday
Sunny, with a high near 81. South southwest wind 6 to 8 mph.
Tuesday Night
Clear, with a low around 48. South wind 5 to 7 mph.
Wednesday
Sunny, with a high near 88. South southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 84.
Friday Night
Mostly clear, with a low around 47.
Saturday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls MT
 47.49°N 111.31°W (Elev. 3399 ft)
Last Update:
2:10 pm MDT Sep 20, 2025
Forecast Valid:
4pm MDT Sep 20, 2025-6pm MDT Sep 27, 2025
 
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