Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. 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

73°F

23°C

Humidity 33%
Wind Speed NNE 17 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 05 Sep 06:00 PM MDT
Extended Forecast for

5 Miles WNW Sand Coulee MT

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm.  Patchy fog after 3am.  Otherwise, increasing clouds, with a low around 49. Northeast wind 12 to 17 mph becoming light and variable  after midnight. Winds could gust as high as 24 mph.  Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Sunday

    Sunday: Areas of fog before 10am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 73. Light and variable wind becoming north northeast 5 to 9 mph in the afternoon.

    High: 73 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am.  Patchy fog after midnight. Low around 52. North northeast wind 5 to 10 mph becoming northwest after midnight.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers
    Likely then
    Showers and
    Patchy Fog

  • Labor Day

    Labor Day: Showers and possibly a thunderstorm.  Patchy fog before 11am. High near 64. Breezy, with a west wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph.  Chance of precipitation is 100%.

    High: 64 °F

    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: Showers likely, mainly before midnight.  Mostly cloudy, with a low around 47. Breezy, with a southwest wind 24 to 28 mph, with gusts as high as 39 mph.  Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: A 40 percent chance of showers before noon.  Mostly sunny, with a high near 68. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 33 mph.

    High: 68 °F

    Chance
    Showers and
    Breezy then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. West wind 5 to 9 mph becoming south southwest in the evening.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. South southwest wind 8 to 15 mph, with gusts as high as 25 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Patchy fog after 3am. Otherwise, increasing clouds, with a low around 49. Northeast wind 12 to 17 mph becoming light and variable after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 20%.
Sunday
Areas of fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 73. Light and variable wind becoming north northeast 5 to 9 mph in the afternoon.
Sunday Night
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm, mainly after 2am. Patchy fog after midnight. Low around 52. North northeast wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Labor Day
Showers and possibly a thunderstorm. Patchy fog before 11am. High near 64. Breezy, with a west wind 5 to 10 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 100%.
Monday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 47. Breezy, with a southwest wind 24 to 28 mph, with gusts as high as 39 mph. Chance of precipitation is 60%.
Tuesday
A 40 percent chance of showers before noon. Mostly sunny, with a high near 68. Breezy, with a southwest wind 16 to 23 mph, with gusts as high as 33 mph.
Tuesday Night
Mostly clear, with a low around 46. West wind 5 to 9 mph becoming south southwest in the evening.
Wednesday
Sunny, with a high near 77. South southwest wind 8 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 51.
Thursday
Sunny, with a high near 80. Breezy.
Thursday Night
Partly cloudy, with a low around 51.
Friday
A chance of showers. Mostly sunny, with a high near 72.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46.
Saturday
A chance of showers. Partly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Sand Coulee MT
 47.41°N 111.26°W (Elev. 3599 ft)
2:16 pm MDT Sep 5, 2026
6pm MDT Sep 5, 2026-6pm MDT Sep 12, 2026
 
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Additional Resources

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