Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

26°F

-3°C

Humidity 95%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 10 Nov 02:00 AM MST
Extended Forecast for

5 Miles SSE Greenough MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. Light south southwest wind.

    Low: 37 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 51. West wind 3 to 7 mph.

    High: 51 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly after 11pm.  Mostly cloudy, with a low around 36. West wind 8 to 11 mph, with gusts as high as 26 mph.

    Low: 36 °F

    Chance Rain

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 45. West wind 6 to 9 mph, with gusts as high as 18 mph.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain after 11am.  Partly sunny, with a high near 49.

    High: 49 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain likely before 11pm, then rain and snow likely between 11pm and 2am, then snow likely after 2am.  Snow level 7600 feet lowering to 5900 feet after midnight . Mostly cloudy, with a low around 30.

    Low: 30 °F

    Rain/Snow
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. Light south southwest wind.
Monday
Partly sunny, with a high near 51. West wind 3 to 7 mph.
Monday Night
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 36. West wind 8 to 11 mph, with gusts as high as 26 mph.
Veterans Day
Mostly sunny, with a high near 45. West wind 6 to 9 mph, with gusts as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 36. Calm wind.
Wednesday
Mostly cloudy, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 37.
Thursday
A chance of rain after 11am. Partly sunny, with a high near 49.
Thursday Night
Rain likely before 11pm, then rain and snow likely between 11pm and 2am, then snow likely after 2am. Snow level 7600 feet lowering to 5900 feet after midnight . Mostly cloudy, with a low around 30.
Friday
A chance of snow. Mostly cloudy, with a high near 33.
Friday Night
A chance of snow. Mostly cloudy, with a low around 25.
Saturday
A chance of snow. Partly sunny, with a high near 34.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 28.
Sunday
A chance of snow. Mostly cloudy, with a high near 39.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Greenough MT
 46.84°N 113.4°W (Elev. 5863 ft)
1:02 am MST Nov 10, 2025
2am MST Nov 10, 2025-6pm MST Nov 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database