Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

68°F

20°C

Humidity 48%
Wind Speed SE 6 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 17 Aug 10:53 PM MDT
Extended Forecast for

Great Falls MT

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 1am.  Patchy smoke. Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 3pm.  Patchy smoke. Mostly sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 84 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Patchy smoke. Partly cloudy, with a low around 53. Light and variable wind becoming southwest 5 to 7 mph after midnight.

    Low: 53 °F

    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke before 7am. Sunny, with a high near 87. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 87 °F

    Patchy Smoke
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 54. West wind around 6 mph becoming calm  in the evening.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Light and variable wind becoming north 5 to 7 mph in the afternoon.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. North northeast wind 5 to 9 mph becoming calm  after midnight.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 87. Calm wind becoming northeast 5 to 7 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers.  Mostly cloudy, with a low around 59.

    Low: 59 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 1am. Patchy smoke. Partly cloudy, with a low around 52. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 3pm. Patchy smoke. Mostly sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon.
Tuesday Night
Patchy smoke. Partly cloudy, with a low around 53. Light and variable wind becoming southwest 5 to 7 mph after midnight.
Wednesday
Patchy smoke before 7am. Sunny, with a high near 87. Southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 54. West wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 85. Light and variable wind becoming north 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 55. North northeast wind 5 to 9 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 87. Calm wind becoming northeast 5 to 7 mph in the afternoon.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 59.
Saturday
A chance of showers after noon. Partly sunny, with a high near 89.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 57.
Sunday
A slight chance of showers. Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls MT
 47.5°N 111.28°W (Elev. 3399 ft)
12:32 pm MDT Aug 17, 2026
11pm MDT Aug 17, 2026-6pm MDT Aug 24, 2026
 
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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