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 >

Current conditions at

ROCKY BOY (RCBM8)

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

NA

32°F

0°C

Humidity 95%
Wind Speed E 3 MPH
Barometer NA
Dewpoint 31°F (-1°C)
Visibility NA
Last update 11 Oct 04:18 AM MDT
Extended Forecast for

5 Miles NW Rocky Boy MT

Winter Weather Advisory October 11, 05:25am until October 12, 06:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory October 11, 05:25am until October 12, 06:00am

    NOW until 6:00am Mon

    Winter Weather Advisory

  • Overnight

    Low: 29 °F

    Rain/Snow

  • Sunday

    Sunday: Rain and snow.  High near 36. Northeast wind around 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Snow, possibly mixed with rain, becoming all snow after 4am.  Low around 26. Northeast wind 6 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Rain/Snow

  • Columbus Day

    Columbus Day: Rain and snow likely, mainly before noon.  Cloudy, with a high near 40. Northeast wind around 5 mph becoming calm  in the morning.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 40 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22. Light south wind.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 47. South wind 3 to 6 mph.

    High: 47 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. Light south wind.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 54. South wind 3 to 6 mph.

    High: 54 °F

    Sunny

Detailed Forecast

Overnight
Rain and snow. Low around 29. North northeast wind around 11 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Rain and snow. High near 36. Northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow, possibly mixed with rain, becoming all snow after 4am. Low around 26. Northeast wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Columbus Day
Rain and snow likely, mainly before noon. Cloudy, with a high near 40. Northeast wind around 5 mph becoming calm in the morning. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday Night
Mostly cloudy, with a low around 22. Light south wind.
Tuesday
Sunny, with a high near 47. South wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 26. Light south wind.
Wednesday
Sunny, with a high near 54. South wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 37.
Saturday
Sunny, with a high near 66.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Rocky Boy MT
 48.3°N 109.88°W (Elev. 3202 ft)
4:42 am MDT Oct 11, 2026
5am MDT Oct 11, 2026-6pm MDT Oct 17, 2026
 
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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