Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

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 91%
Wind Speed W 5 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Wind Chill19°F (-7°C)
Last update 19 Jan 12:15 PM MST
Extended Forecast for

5 Miles SSE Greenough MT

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 31. Calm wind becoming west around 5 mph.

    High: 31 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 24. West southwest wind around 6 mph.

    Low: 24 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 32. West wind around 5 mph becoming calm  in the morning.

    High: 32 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19. Light west wind.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 28. East southeast wind around 5 mph becoming calm  in the morning.

    High: 28 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of snow after 11am.  Mostly sunny, with a high near 24.

    High: 24 °F

    Slight Chance
    Snow

Detailed Forecast

M.L.King Day
Sunny, with a high near 31. Calm wind becoming west around 5 mph.
Tonight
Increasing clouds, with a low around 24. West southwest wind around 6 mph.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 32. West wind around 5 mph becoming calm in the morning.
Tuesday Night
Mostly clear, with a low around 19. Light west wind.
Wednesday
Mostly sunny, with a high near 28. East southeast wind around 5 mph becoming calm in the morning.
Wednesday Night
Mostly cloudy, with a low around 17.
Thursday
Partly sunny, with a high near 28.
Thursday Night
Mostly cloudy, with a low around 12.
Friday
A slight chance of snow after 11am. Mostly sunny, with a high near 24.
Friday Night
Partly cloudy, with a low around 13.
Saturday
A slight chance of snow. Mostly sunny, with a high near 26.
Saturday Night
A slight chance of snow. Partly cloudy, with a low around 18.
Sunday
A chance of snow. Partly sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Greenough MT
 46.84°N 113.4°W (Elev. 5863 ft)
2:07 am MST Jan 19, 2026
12pm MST Jan 19, 2026-6pm MST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database