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

Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

70°F

21°C

Humidity 37%
Wind Speed W 9 MPH
Barometer 30.24 in (1024.04 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 02 Sep 10:05 AM MDT
Extended Forecast for

Great Falls MT

  • Today

    Today: Mostly sunny, with a high near 90. West northwest wind 5 to 9 mph becoming north in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Tonight

    Tonight: Areas of smoke after 11pm. Mostly clear, with a low around 54. North wind 5 to 9 mph becoming calm after midnight.

    Low: 54 °F

    Areas Smoke

  • Wednesday

    Wednesday: Areas of smoke. Sunny, with a high near 89. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 89 °F

    Areas Smoke

  • Wednesday Night

    Wednesday Night: Areas of smoke before 7pm. Mostly clear, with a low around 57. Northeast wind 5 to 7 mph becoming calm in the evening.

    Low: 57 °F

    Areas Smoke
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 78. North wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 78 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. North northeast wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 77. Calm wind becoming east northeast 5 to 9 mph in the afternoon.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47. East northeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 90. West northwest wind 5 to 9 mph becoming north in the afternoon.
Tonight
Areas of smoke after 11pm. Mostly clear, with a low around 54. North wind 5 to 9 mph becoming calm after midnight.
Wednesday
Areas of smoke. Sunny, with a high near 89. Calm wind becoming northeast around 5 mph in the afternoon.
Wednesday Night
Areas of smoke before 7pm. Mostly clear, with a low around 57. Northeast wind 5 to 7 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 78. North wind 6 to 13 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 46. North northeast wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 21 mph.
Friday
Sunny, with a high near 77. Calm wind becoming east northeast 5 to 9 mph in the afternoon.
Friday Night
Mostly clear, with a low around 47. East northeast wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Saturday
Sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Partly sunny, with a high near 84.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Falls MT
 47.51°N 111.31°W (Elev. 3399 ft)
Last Update:
8:23 am MDT Sep 2, 2025
Forecast Valid:
10am MDT Sep 2, 2025-6pm MDT Sep 8, 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