High-Impact and Far-Reaching Winter Storm Continues; Cold Expands and Persists

A major winter storm will shift its impacts into the Northeast U.S. with heavy snow through tonight while over the Mid-Atlantic, sleet and freezing rain will diminish. Extremely cold air behind the storm will prolong dangerous travel and infrastructure impacts. Sub-zero low temperatures are expected nearly every morning from the Northern Plains through the Ohio Valley and into the Northeast. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

6°F

-14°C

Humidity 85%
Wind Speed E 0 MPH
Barometer NA
Dewpoint 2°F (-17°C)
Visibility NA
Last update 26 Jan 02:15 AM MST
Extended Forecast for

Greenough MT

  • Overnight

    Overnight: Mostly clear, with a low around 0. Calm wind.

    Low: 0 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 33. Calm wind.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 12. Calm wind.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Calm wind.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 9pm.  Otherwise, mostly cloudy, with a low around 16. Calm wind.

    Low: 16 °F

    Patchy Fog

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 38.

    High: 38 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm.  Otherwise, mostly cloudy, with a low around 21.

    Low: 21 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 10am.  Otherwise, partly sunny, with a high near 40.

    High: 40 °F

    Areas Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 8pm.  Otherwise, mostly cloudy, with a low around 25.

    Low: 25 °F

    Patchy Fog

Detailed Forecast

Overnight
Mostly clear, with a low around 0. Calm wind.
Monday
Mostly sunny, with a high near 33. Calm wind.
Monday Night
Partly cloudy, with a low around 12. Calm wind.
Tuesday
Mostly sunny, with a high near 36. Calm wind.
Tuesday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 16. Calm wind.
Wednesday
Mostly cloudy, with a high near 38.
Wednesday Night
Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 21.
Thursday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 40.
Thursday Night
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 25.
Friday
A chance of rain after 11am. Areas of fog before 11am. Snow level 4400 feet rising to 5400 feet in the afternoon. Otherwise, mostly cloudy, with a high near 43.
Friday Night
A slight chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 29.
Saturday
Patchy fog. Otherwise, partly sunny, with a high near 44.
Saturday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 26.
Sunday
Patchy fog. Otherwise, partly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
Greenough MT
 46.92°N 113.45°W (Elev. 3783 ft)
2:07 am MST Jan 26, 2026
2am MST Jan 26, 2026-6pm MST Feb 1, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database