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.

Mostly Cloudy

45°F

7°C

Humidity 70%
Wind Speed W 9 MPH
Barometer 30.14 in (1020.66 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 21 May 08:55 AM MDT
Extended Forecast for

Great Falls MT

  • Tonight

    Tonight: A 20 percent chance of showers before midnight. Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm in the evening.

    Low: 36 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69. Southwest wind 3 to 5 mph.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Light and variable wind.

    Low: 41 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 77. Southwest wind 5 to 8 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 48. South southwest wind 5 to 8 mph.

    Low: 48 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. West southwest wind 8 to 17 mph, with gusts as high as 28 mph.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50. South southwest wind 6 to 15 mph, with gusts as high as 24 mph.

    Low: 50 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Sunny, with a high near 85. Light south southwest wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: A chance of rain, mainly before midnight. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain

Detailed Forecast

Tonight
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 69. Southwest wind 3 to 5 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 41. Light and variable wind.
Saturday
Sunny, with a high near 77. Southwest wind 5 to 8 mph.
Saturday Night
Mostly clear, with a low around 48. South southwest wind 5 to 8 mph.
Sunday
Sunny, with a high near 82. West southwest wind 8 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Partly cloudy, with a low around 50. South southwest wind 6 to 15 mph, with gusts as high as 24 mph.
Memorial Day
Sunny, with a high near 85. Light south southwest wind increasing to 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Monday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 52.
Tuesday
A slight chance of rain, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.
Tuesday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 48.
Wednesday
A chance of rain and thunderstorms. Partly sunny, with a high near 70.
Wednesday Night
A chance of rain and thunderstorms. Partly cloudy, with a low around 47.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Falls MT
 47.49°N 111.31°W (Elev. 3399 ft)
Last Update:
7:46 pm MDT May 21, 2026
Forecast Valid:
7pm MDT May 21, 2026-6pm MDT May 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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