Heavy Rain and Thunderstorms in the Plains; Snow in the Northern Rockies; Heavy Rain in Guam

A storm system moving over the Rockies today will bring marginal risks for excessive rainfall and severe thunderstorms from parts of New Mexico into western South Dakota. Heavy snow expected from northwestern Wyoming into southern Montana. Ongoing heavy showers and thunderstorms from Invest 96W could result in localized flash flooding, particularly in central or southern Guam early this morning. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Overcast

41°F

5°C

Humidity 79%
Wind Speed SW 5 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 15 Oct 12:22 PM MDT
Extended Forecast for

Great Falls MT

  • This Afternoon

    This Afternoon: A 40 percent chance of rain, mainly after 3pm.  Mostly cloudy, with a high near 47. Light northeast wind.

    High: 47 °F

    Chance Rain

  • Tonight

    Tonight: A 40 percent chance of rain after 1am.  Mostly cloudy, with a low around 33. Light and variable wind.

    Low: 33 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain before 11am, then a slight chance of rain after noon.  Cloudy, then gradually becoming mostly sunny, with a high near 55. West wind 5 to 8 mph.  Chance of precipitation is 40%.

    High: 55 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 38. Southwest wind 9 to 16 mph, with gusts as high as 25 mph.

    Low: 38 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of rain, mainly after noon.  Mostly sunny, with a high near 58. West southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Chance Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain, mainly before midnight.  Mostly cloudy, with a low around 31. West southwest wind around 11 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 58. Southwest wind 8 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of rain after midnight.  Partly cloudy, with a low around 42. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.

    Low: 42 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Sunday

    Sunday: A chance of rain, mainly before noon.  Partly sunny, with a high near 65.

    High: 65 °F

    Chance Rain

Detailed Forecast

This Afternoon
A 40 percent chance of rain, mainly after 3pm. Mostly cloudy, with a high near 47. Light northeast wind.
Tonight
A 40 percent chance of rain after 1am. Mostly cloudy, with a low around 33. Light and variable wind.
Thursday
A chance of rain before 11am, then a slight chance of rain after noon. Cloudy, then gradually becoming mostly sunny, with a high near 55. West wind 5 to 8 mph. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 38. Southwest wind 9 to 16 mph, with gusts as high as 25 mph.
Friday
A 30 percent chance of rain, mainly after noon. Mostly sunny, with a high near 58. West southwest wind around 15 mph, with gusts as high as 25 mph.
Friday Night
A 40 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 31. West southwest wind around 11 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 58. Southwest wind 8 to 15 mph, with gusts as high as 25 mph.
Saturday Night
A slight chance of rain after midnight. Partly cloudy, with a low around 42. South southwest wind 11 to 15 mph, with gusts as high as 24 mph.
Sunday
A chance of rain, mainly before noon. Partly sunny, with a high near 65.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 38.
Monday
A chance of rain. Partly sunny, with a high near 55.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
Great Falls MT
 47.52°N 111.28°W (Elev. 3399 ft)
8:56 am MDT Oct 15, 2025
12pm MDT Oct 15, 2025-6pm MDT Oct 21, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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