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

Lake Effect Snow in the Lower Great Lakes; Rain and High Elevation Snow in the West

Lake-effect snow will continue downwind of Lakes Erie and Ontario through Friday. In the Western U.S., rain and higher elevation snow will continue over the Great Basin through Friday. A front will move over the Pacific Northwest Thursday afternoon and produce light rain and higher elevation snow over the Cascades through Saturday. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

20°F

-7°C

Humidity 99%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 12 Feb 01:15 AM MST
Extended Forecast for

5 Miles SSE Greenough MT

  • Overnight

    Overnight: Mostly clear, with a low around 25. Light southwest wind.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 39. West wind 3 to 5 mph.

    High: 39 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27. West southwest wind around 6 mph.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39. West southwest wind 3 to 5 mph.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 30. West southwest wind around 5 mph.

    Low: 30 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 40. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 32. New snow accumulation of less than one inch possible.

    Low: 32 °F

    Chance Snow

  • Sunday

    Sunday: Snow likely. Mostly cloudy, with a high near 39.

    High: 39 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 29.

    Low: 29 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 25. Light southwest wind.
Thursday
Sunny, with a high near 39. West wind 3 to 5 mph.
Thursday Night
Partly cloudy, with a low around 27. West southwest wind around 6 mph.
Friday
Mostly sunny, with a high near 39. West southwest wind 3 to 5 mph.
Friday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 30. West southwest wind around 5 mph.
Saturday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 40. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 32. New snow accumulation of less than one inch possible.
Sunday
Snow likely. Mostly cloudy, with a high near 39.
Sunday Night
A chance of snow, mainly before 11pm. Mostly cloudy, with a low around 29.
Washington's Birthday
A chance of snow, mainly after 11am. Mostly cloudy, with a high near 39.
Monday Night
A chance of snow. Mostly cloudy, with a low around 28.
Tuesday
Snow. Mostly cloudy, with a high near 35.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 25.
Wednesday
Snow likely. Mostly cloudy, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Greenough MT
 46.84°N 113.4°W (Elev. 5863 ft)
Last Update:
1:01 am MST Feb 12, 2026
Forecast Valid:
1am MST Feb 12, 2026-6pm MST Feb 18, 2026
 
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Additional Resources

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