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Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Hazardous Weather Conditions

Current conditions at

ROCKY BOY (RCBM8)

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

NA

45°F

7°C

Humidity 70%
Wind Speed WNW 1 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 10 Oct 05:18 AM MDT
Extended Forecast for

Rocky Boy MT

Winter Weather Advisory October 10, 06:00pm until October 12, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Rain before 4pm, then rain likely, possibly mixed with snow. Temperature falling to around 34 by 5pm. North wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 44 °F⇓

    Chance Rain
    then
    Rain/Snow

  • Tonight

    Tonight: Snow. Low around 28. North wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 28 °F

    Snow

  • Sunday

    Sunday: Snow. High near 35. Northeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 35 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. Low around 25. Northeast wind 5 to 7 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 25 °F

    Snow

  • Columbus Day

    Columbus Day: Snow likely before noon, then a chance of rain and snow. Mostly cloudy, with a high near 40. Light and variable wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Likely
    then Chance
    Rain/Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24. Light south wind.

    Low: 24 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 48. Light south wind.

    High: 48 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

Today
Rain before 4pm, then rain likely, possibly mixed with snow. Temperature falling to around 34 by 5pm. North wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tonight
Snow. Low around 28. North wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Sunday
Snow. High near 35. Northeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Sunday Night
Snow. Low around 25. Northeast wind 5 to 7 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Columbus Day
Snow likely before noon, then a chance of rain and snow. Mostly cloudy, with a high near 40. Light and variable wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday Night
Mostly cloudy, with a low around 24. Light south wind.
Tuesday
Sunny, with a high near 48. Light south wind.
Tuesday Night
Mostly clear, with a low around 28. Calm wind.
Wednesday
Sunny, with a high near 54.
Wednesday Night
A slight chance of rain. Partly cloudy, with a low around 31.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rocky Boy MT
 48.26°N 109.78°W (Elev. 3789 ft)
Last Update:
3:47 am MDT Oct 10, 2026
Forecast Valid:
5am MDT Oct 10, 2026-6pm MDT Oct 16, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation