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

Winter Weather Brings Dangerous Travel Conditions Across the Northern U.S.

Heavy lake effect snow will persist downwind of the Great Lakes through early Saturday. Snow squalls with heavy snow and gusty winds will create dangerous travel in the Interior Northeast due to low visibility and slippery roads. A major winter storm will bring moderate to heavy, accumulating snow and gusty winds from the eastern Plains to the western Great Lakes today through Saturday. Read More >

Hazardous Weather Conditions

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

Lat: 46.71854°NLon: 113.29534°WElev: 3901.0ft.

unknown precip

25°F

-4°C

Humidity 99%
Wind Speed ESE 5 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill19°F (-7°C)
Last update 28 Nov 01:01 PM MST
Extended Forecast for

Potomac MT

Winter Storm Warning November 28, 01:25pm until November 28, 06:00pm
Click here for hazard details and duration
Winter Storm Warning
  •  
    Winter Storm Warning November 28, 01:25pm until November 28, 06:00pm

    NOW until 6:00pm Fri

    Winter Storm Warning

  • This Afternoon

    High: 37 °F

    Snow Likely

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 2. Calm wind.

    Low: 2 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, increasing clouds, with a high near 25. Calm wind.

    High: 25 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 6. Calm wind.

    Low: 6 °F

    Cloudy then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 30. Calm wind.

    High: 30 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: A 10 percent chance of snow after 11am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 32.

    High: 32 °F

    Slight Chance
    Snow and
    Patchy Fog

  • Monday Night

    Monday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Snow Likely

Detailed Forecast

This Afternoon
Snow likely, mainly before 2pm. Cloudy, with a high near 37. East northeast wind around 6 mph. Chance of precipitation is 60%. Total daytime snow accumulation of 3 to 5 inches possible.
Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 2. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, increasing clouds, with a high near 25. Calm wind.
Saturday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 6. Calm wind.
Sunday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 30. Calm wind.
Sunday Night
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 7.
Monday
A 10 percent chance of snow after 11am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 32.
Monday Night
Snow likely, mainly after 11pm. Mostly cloudy, with a low around 20.
Tuesday
Snow. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 36.
Tuesday Night
A chance of snow, mainly before 11pm. Patchy fog before 11pm, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 17.
Wednesday
A slight chance of snow. Areas of fog. Otherwise, partly sunny, with a high near 34.
Wednesday Night
A slight chance of snow. Mostly cloudy, with a low around 17.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Potomac MT
 46.89°N 113.59°W (Elev. 3589 ft)
Last Update:
1:01 pm MST Nov 28, 2025
Forecast Valid:
1pm MST Nov 28, 2025-6pm MST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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