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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

88°F

31°C

Humidity 16%
Wind Speed W 18 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 15 Aug 03:35 PM MDT
Extended Forecast for

2 Miles ENE Great Falls International Airport MT

  • Tonight

    Tonight: Mostly clear, with a low around 57. West wind 6 to 11 mph becoming light and variable. Winds could gust as high as 21 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 92. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 23 mph.

    High: 92 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 59. West northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.

    Low: 59 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 88. West wind 3 to 7 mph.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57. South southwest wind 5 to 9 mph.

    Low: 57 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 90. Southwest wind 3 to 6 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. Northwest wind 5 to 8 mph becoming light and variable after midnight.

    Low: 59 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 57. West wind 6 to 11 mph becoming light and variable. Winds could gust as high as 21 mph.
Saturday
Sunny, with a high near 92. Light southwest wind becoming west 8 to 13 mph in the morning. Winds could gust as high as 23 mph.
Saturday Night
Mostly cloudy, with a low around 59. West northwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.
Sunday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 88. West wind 3 to 7 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 57. South southwest wind 5 to 9 mph.
Monday
Sunny, with a high near 90. Southwest wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 59. Northwest wind 5 to 8 mph becoming light and variable after midnight.
Tuesday
Sunny and hot, with a high near 96. Calm wind becoming west southwest around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 57.
Friday
Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Great Falls International Airport MT
 47.49°N 111.34°W (Elev. 3399 ft)
Last Update:
2:22 pm MDT Aug 15, 2025
Forecast Valid:
3pm MDT Aug 15, 2025-6pm MDT Aug 22, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation