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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

49°F

9°C

Humidity 73%
Wind Speed N 0 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 03 Oct 08:53 AM MDT
Extended Forecast for

Great Falls International Airport MT

  • Today

    Today: Mostly sunny, with a high near 67. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 39. East northeast wind 5 to 9 mph becoming light and variable after midnight.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. East wind 6 to 13 mph becoming south southwest after midnight.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. South southwest wind 14 to 21 mph, with gusts as high as 36 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52. Southwest wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. Southwest wind around 6 mph.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 67. Calm wind becoming east 5 to 8 mph in the afternoon.
Tonight
Partly cloudy, with a low around 39. East northeast wind 5 to 9 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 75. Light and variable wind.
Sunday Night
Mostly clear, with a low around 49. East wind 6 to 13 mph becoming south southwest after midnight.
Monday
Sunny, with a high near 83. South southwest wind 14 to 21 mph, with gusts as high as 36 mph.
Monday Night
Mostly clear, with a low around 52. Southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 78. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Tuesday Night
Partly cloudy, with a low around 48. Southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 50.
Friday
Mostly sunny, with a high near 76. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls International Airport MT
 47.46°N 111.4°W (Elev. 3599 ft)
Last Update:
4:11 am MDT Oct 3, 2026
Forecast Valid:
9am MDT Oct 3, 2026-6pm MDT Oct 9, 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