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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

BOULDER MOUNTAIN (BOMM8)

Lat: 46.5596°NLon: 111.28973°WElev: 7950.0ft.

NA

20°F

-7°C

Humidity NA
Wind Speed NA NA MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

18 Miles W White Sulphur Springs MT

Winter Storm Warning October 11, 05:33am until October 12, 06:00am
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning October 11, 05:33am until October 12, 06:00am

    NOW until 6:00am Mon

    Winter Storm Warning

  • Overnight

    Low: 25 °F

    Snow and
    Blowing Snow

  • Sunday

    Sunday: Snow. Areas of blowing snow before 11am. Temperature falling to around 22 by 5pm. Windy, with a north wind 20 to 30 mph decreasing to 10 to 20 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 25 °F⇓

    Snow and
    Areas Blowing
    Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Patchy blowing snow after 10pm. Low around 21. Blustery, with a north northeast wind 11 to 16 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    Low: 21 °F

    Heavy Snow
    and Patchy
    Blowing Snow

  • Columbus Day

    Columbus Day: A 50 percent chance of snow, mainly before 10am. Mostly cloudy, with a high near 26. North wind 8 to 13 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.

    High: 26 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 20. Light west southwest wind becoming south southwest 5 to 9 mph in the evening.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29. Southwest wind 5 to 9 mph becoming calm in the afternoon.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. Calm wind becoming southwest 5 to 9 mph in the evening.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 32. Southwest wind 6 to 11 mph becoming light west southwest in the afternoon.

    High: 32 °F

    Sunny

Detailed Forecast

Overnight
Snow. Widespread blowing snow. Low around 25. Windy, with a north wind around 32 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 3 inches possible.
Sunday
Snow. Areas of blowing snow before 11am. Temperature falling to around 22 by 5pm. Windy, with a north wind 20 to 30 mph decreasing to 10 to 20 mph in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Sunday Night
Snow. The snow could be heavy at times. Patchy blowing snow after 10pm. Low around 21. Blustery, with a north northeast wind 11 to 16 mph increasing to 19 to 24 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Columbus Day
A 50 percent chance of snow, mainly before 10am. Mostly cloudy, with a high near 26. North wind 8 to 13 mph becoming light and variable in the afternoon. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.
Monday Night
Partly cloudy, with a low around 20. Light west southwest wind becoming south southwest 5 to 9 mph in the evening.
Tuesday
Mostly sunny, with a high near 29. Southwest wind 5 to 9 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 23. Calm wind becoming southwest 5 to 9 mph in the evening.
Wednesday
Sunny, with a high near 32. Southwest wind 6 to 11 mph becoming light west southwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 27.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Sunny, with a high near 39.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
18 Miles W White Sulphur Springs MT
 46.56°N 111.3°W (Elev. 8012 ft)
Last Update:
4:42 am MDT Oct 11, 2026
Forecast Valid:
5am MDT Oct 11, 2026-6pm MDT Oct 17, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation