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

Significant Coastal Impacts to the Eastern Seaboard; Tropical Storm Nolo to Impact Hawaii

A Nor'easter will bring significant coastal impacts to the Mid-Atlantic and New England through the weekend. Moderate to major coastal flooding, heavy rain, strong winds and high surf expected. Tropical Storm Nolo will continue to strengthen as it moves north toward the Big Island of Hawaii. Heavy rainfall may bring life-threatening, catastrophic flooding and mudslides through the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

87°F

31°C

Humidity 14%
Wind Speed SSW 18 MPH
Barometer 29.67 in (1004.74 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 25 Sep 02:53 PM MDT
Extended Forecast for

Great Falls MT

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 46. Breezy, with a southwest wind 11 to 16 mph increasing to 19 to 24 mph in the evening. Winds could gust as high as 39 mph.

    Low: 46 °F

    Slight Chance
    T-storms and
    Breezy then
    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 65. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 37 mph.

    High: 65 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 65. Light north northeast wind.

    High: 65 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43. East northeast wind around 5 mph becoming calm in the evening.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. Light and variable wind becoming southwest 6 to 11 mph in the evening. Winds could gust as high as 20 mph.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73. Breezy, with a southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 73 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 11pm. Cloudy during the early evening, then gradual clearing, with a low around 46. Breezy, with a southwest wind 11 to 16 mph increasing to 19 to 24 mph in the evening. Winds could gust as high as 39 mph.
Saturday
Mostly sunny, with a high near 65. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 37 mph.
Saturday Night
Mostly cloudy, with a low around 39. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 25 mph.
Sunday
Mostly cloudy, with a high near 65. Light north northeast wind.
Sunday Night
Mostly cloudy, with a low around 43. East northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 71. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 45. Light and variable wind becoming southwest 6 to 11 mph in the evening. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 73. Breezy, with a southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
A chance of rain. Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls MT
 47.51°N 111.31°W (Elev. 3399 ft)
Last Update:
12:31 pm MDT Sep 25, 2026
Forecast Valid:
3pm MDT Sep 25, 2026-6pm MDT Oct 2, 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