Prolonged Extreme Cold; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the Gulf Coast, upper Ohio Valley, Mid-Atlantic, and Southeast U.S. into this weekend. A rapidly deepening storm centered just off the North Carolina coast Friday night through Saturday night will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

28°F

-2°C

Humidity 98%
Wind Speed E 0 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 30 Jan 09:00 AM MST
Extended Forecast for

Potomac MT

  • Today

    Today: A chance of rain and snow before 4pm, then a slight chance of rain between 4pm and 5pm.  Patchy fog before 10am. Snow level 4100 feet rising to 6100 feet in the afternoon.  Otherwise, mostly cloudy, with a high near 43. Light and variable wind.  Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 43 °F

    Chance
    Rain/Snow and
    Patchy Fog
    then Slight
    Chance Rain

  • Tonight

    Tonight: A slight chance of rain, mixing with freezing rain after 9pm, then gradually ending.  Cloudy, then gradually becoming partly cloudy, with a low around 33. Light west wind.  Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain/Freezing
    Rain then
    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 49. Calm wind.

    High: 49 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Patchy fog between 2am and 5am.  Otherwise, mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am.  Otherwise, partly sunny, with a high near 48. Calm wind.

    High: 48 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of rain after 11am.  Snow level 4400 feet. Partly sunny, with a high near 44.

    High: 44 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 9am.  Otherwise, partly sunny, with a high near 46.

    High: 46 °F

    Patchy Fog
    then Partly
    Sunny

Detailed Forecast

Today
A chance of rain and snow before 4pm, then a slight chance of rain between 4pm and 5pm. Patchy fog before 10am. Snow level 4100 feet rising to 6100 feet in the afternoon. Otherwise, mostly cloudy, with a high near 43. Light and variable wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tonight
A slight chance of rain, mixing with freezing rain after 9pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 33. Light west wind. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 49. Calm wind.
Saturday Night
Patchy fog between 2am and 5am. Otherwise, mostly cloudy, with a low around 28. Calm wind.
Sunday
Patchy fog before 7am. Otherwise, partly sunny, with a high near 48. Calm wind.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
A 20 percent chance of rain after 11am. Snow level 4400 feet. Partly sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 46.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Potomac MT
 46.89°N 113.59°W (Elev. 3589 ft)
2:33 am MST Jan 30, 2026
9am MST Jan 30, 2026-6pm MST Feb 5, 2026
 
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Additional Resources

Radar & Satellite Image

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