National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Strong System To Move Through East; Very Unsettled Hawaii and Alaska

A strong cold front will sweep through the East on Monday with lake effect snow, high winds and strong to severe thunderstorms. Meanwhile, a powerful Kona low will produce multiple hazards across Hawaii, including heavy rain and potential catastrophic flooding. Finally, a winter storm is impacting Alaska as blizzard and winter storm warnings are in effect for much of western and southern Alaska. Read More >

Hazardous Weather Conditions

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

Lat: 46.71854°NLon: 113.29534°WElev: 3901ft.

N/A

27°F

-3°C

Humidity 42%
Wind Speed NNW 5 MPH
Barometer NA
Dewpoint 7°F (-14°C)
Visibility NA
Wind Chill21°F (-6°C)
Last update 05 Dec 05:16 PM MST
Extended Forecast for

Potomac MT

Winter Weather Advisory December 6, 06:00am until December 6, 08:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Increasing clouds, with a low around 16. Calm wind.

    Increasing
    Clouds

    Low: 16 °F

  • Monday

    Monday: Snow likely, mainly after 11am. Cloudy, with a high near 32. Light and variable wind. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Snow Likely

    High: 32 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of snow, mainly before 11pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 22. Calm wind. New snow accumulation of less than a half inch possible.

    Chance Snow
    and Patchy
    Fog

    Low: 22 °F

  • Tuesday

    Tuesday: A chance of snow before 2pm, then a chance of rain and snow. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 38. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Chance Snow
    and Patchy
    Fog then
    Chance
    Rain/Snow

    High: 38 °F

  • Tuesday
    Night

    Tuesday Night: A chance of rain and snow before 5am, then a chance of snow. Mostly cloudy, with a low around 30. Light southwest wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Chance
    Rain/Snow

    Low: 30 °F

  • Wednesday

    Wednesday: Rain and snow likely before 11am, then rain between 11am and 2pm, then rain and snow after 2pm. Snow level rising to 5400 feet. High near 42. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Rain/Snow

    High: 42 °F

  • Wednesday
    Night

    Wednesday Night: A 50 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 20. New snow accumulation of less than a half inch possible.

    Chance Snow
    then Slight
    Chance Snow

    Low: 20 °F

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 30.

    Chance Snow

    High: 30 °F

  • Thursday
    Night

    Thursday Night: A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 14.

    Chance Snow

    Low: 14 °F

Detailed Forecast

Tonight
Increasing clouds, with a low around 16. Calm wind.
Monday
Snow likely, mainly after 11am. Cloudy, with a high near 32. Light and variable wind. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday Night
A 30 percent chance of snow, mainly before 11pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 22. Calm wind. New snow accumulation of less than a half inch possible.
Tuesday
A chance of snow before 2pm, then a chance of rain and snow. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 38. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
A chance of rain and snow before 5am, then a chance of snow. Mostly cloudy, with a low around 30. Light southwest wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Wednesday
Rain and snow likely before 11am, then rain between 11am and 2pm, then rain and snow after 2pm. Snow level rising to 5400 feet. High near 42. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 50 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 20. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow. Mostly cloudy, with a high near 30.
Thursday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 14.
Friday
A slight chance of snow. Mostly cloudy, with a high near 28.
Friday Night
Mostly cloudy, with a low around 14.
Saturday
A slight chance of snow. Mostly cloudy, with a high near 34.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 23.
Sunday
Rain and snow likely. Snow level rising to 4500 feet in the afternoon. Mostly cloudy, with a high near 40.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Potomac MT
 46.89°N 113.59°W (Elev. 3589 ft)
Last Update:
3:31 pm MST Dec 5, 2021
Forecast Valid:
5pm MST Dec 5, 2021-6pm MST Dec 12, 2021
 
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