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

ROCKY BOY (RCBM8)

Lat: 48.25529°NLon: 109.78592°WElev: 3789.0ft.

NA

85°F

29°C

Humidity 21%
Wind Speed SE 5 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Heat Index82°F (28°C)
Last update 29 Sep 04:18 PM MDT
Extended Forecast for

4 Miles NW Rocky Boy MT

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Southeast wind 6 to 15 mph becoming south southwest after midnight. Winds could gust as high as 26 mph.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. West southwest wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before midnight.  Mostly cloudy, with a low around 51. West wind 5 to 9 mph becoming south after midnight.

    Low: 51 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 74. South southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 49. Southwest wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 49 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 70. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 46. West southwest wind 7 to 9 mph.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 66. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 66 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 58. Southeast wind 6 to 15 mph becoming south southwest after midnight. Winds could gust as high as 26 mph.
Tuesday
Mostly sunny, with a high near 78. West southwest wind 5 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 51. West wind 5 to 9 mph becoming south after midnight.
Wednesday
Sunny, with a high near 74. South southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 49. Southwest wind 5 to 10 mph, with gusts as high as 18 mph.
Thursday
Partly sunny, with a high near 70. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 46. West southwest wind 7 to 9 mph.
Friday
Mostly sunny, with a high near 66. Southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 38.
Sunday
A slight chance of showers. Partly sunny, with a high near 54.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 33.
Monday
A slight chance of showers. Mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Rocky Boy MT
 48.3°N 109.88°W (Elev. 3202 ft)
2:10 pm MDT Sep 29, 2025
4pm MDT Sep 29, 2025-6pm MDT Oct 6, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database