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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

77°F

25°C

Humidity 29%
Wind Speed SSW 8 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 28 Aug 12:20 PM MDT
Extended Forecast for

Great Falls MT

  • This Afternoon

    This Afternoon: Patchy smoke before 5pm. Mostly cloudy, with a high near 87. Light and variable wind becoming south southwest 5 to 8 mph.

    High: 87 °F

    Patchy Smoke

  • Tonight

    Tonight: A slight chance of rain before 2am, then a slight chance of rain after 5am. Patchy smoke between 9pm and 11pm. Mostly cloudy, with a low around 58. West southwest wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 58 °F

    Patchy Smoke
    then Slight
    Chance Rain

  • Saturday

    Saturday: A chance of rain and thunderstorms before 4pm, then showers likely and possibly a thunderstorm after 5pm. Patchy smoke between noon and 2pm. Cloudy through mid morning, then gradual clearing, with a high near 81. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Chance of precipitation is 60%.

    High: 81 °F

    Chance Rain
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Rain and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 50. South wind 5 to 7 mph. Chance of precipitation is 80%.

    Low: 50 °F

    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 9am, then rain likely, mainly between 9am and noon. Partly sunny, with a high near 69. Breezy, with a west southwest wind 7 to 12 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely then
    Slight Chance
    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. Southwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79. Southwest wind around 6 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. East southeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Patchy smoke before 5pm. Mostly cloudy, with a high near 87. Light and variable wind becoming south southwest 5 to 8 mph.
Tonight
A slight chance of rain before 2am, then a slight chance of rain after 5am. Patchy smoke between 9pm and 11pm. Mostly cloudy, with a low around 58. West southwest wind 5 to 9 mph becoming calm after midnight. Chance of precipitation is 20%.
Saturday
A chance of rain and thunderstorms before 4pm, then showers likely and possibly a thunderstorm after 5pm. Patchy smoke between noon and 2pm. Cloudy through mid morning, then gradual clearing, with a high near 81. Calm wind becoming south southwest 5 to 8 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Rain and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 50. South wind 5 to 7 mph. Chance of precipitation is 80%.
Sunday
Showers likely and possibly a thunderstorm before 9am, then rain likely, mainly between 9am and noon. Partly sunny, with a high near 69. Breezy, with a west southwest wind 7 to 12 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 60%.
Sunday Night
Mostly clear, with a low around 45. Southwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph.
Monday
Sunny, with a high near 79. Southwest wind around 6 mph.
Monday Night
Mostly clear, with a low around 49. East southeast wind 5 to 7 mph becoming light and variable after midnight.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A slight chance of showers before midnight. Mostly cloudy, with a low around 54.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 83.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 77.
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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:
12:31 pm MDT Aug 28, 2026
Forecast Valid:
12pm MDT Aug 28, 2026-6pm MDT Sep 3, 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