Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Current conditions at

Great Falls, Great Falls International Airport (KGTF)

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

Clear

84°F

29°C

Humidity 21%
Wind Speed SSW 9 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 29 Sep 05:53 PM MDT
Extended Forecast for

9 Miles S Ulm MT

  • Tonight

    Tonight: Increasing clouds, with a low around 53. South wind 6 to 9 mph.

    Low: 53 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 76. Southwest wind 6 to 16 mph, with gusts as high as 23 mph.

    High: 76 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before midnight.  Mostly cloudy, with a low around 48. West southwest wind 6 to 10 mph becoming south in the evening.

    Low: 48 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. South wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after midnight.  Mostly cloudy, with a low around 46. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 46 °F

    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 70. Southwest wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 41. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 41 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 66. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 53. South wind 6 to 9 mph.
Tuesday
Partly sunny, with a high near 76. Southwest wind 6 to 16 mph, with gusts as high as 23 mph.
Tuesday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 48. West southwest wind 6 to 10 mph becoming south in the evening.
Wednesday
Mostly sunny, with a high near 74. South wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Wednesday Night
A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 46. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Thursday
Partly sunny, with a high near 70. Southwest wind 6 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 41. Southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 66. Southwest wind 7 to 13 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 35.
Sunday
A chance of showers. Mostly cloudy, with a high near 53.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 32.
Monday
A slight chance of showers. Mostly sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles S Ulm MT
 47.31°N 111.49°W (Elev. 3599 ft)
5:24 pm MDT Sep 29, 2025
6pm MDT Sep 29, 2025-6pm MDT Oct 6, 2025
 
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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