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

Tracking Winter Weather and Frigid Temperatures This Weekend

Another clipper will drop into the Northern Plains and Upper Midwest into Sunday with snow and gusty winds contributing to some areas of blizzard conditions and snow squalls. Impactful snowfall will occur up and down the East Coast Sunday extending from the western Florida Panhandle to Maine. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

21°F

-6°C

Humidity 93%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 17 Jan 11:45 PM MST
Extended Forecast for

Greenough MT

  • Overnight

    Overnight: Patchy fog before 4am, then patchy fog after 5am. Areas of freezing fog. Otherwise, mostly clear, with a low around 16. Calm wind.

    Low: 16 °F

    Areas
    Freezing Fog
    and Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 11am. Areas of freezing fog before 11am. Otherwise, mostly sunny, with a high near 34. Calm wind.

    High: 34 °F

    Areas
    Freezing Fog
    and Patchy
    Fog then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 8pm. Otherwise, mostly clear, with a low around 10. Calm wind.

    Low: 10 °F

    Patchy Fog

  • M.L.King Day

    M.L.King Day: Patchy fog before 11am. Otherwise, sunny, with a high near 32. Calm wind.

    High: 32 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog before 2am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 13. Calm wind.

    Low: 13 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 10pm and 5am. Otherwise, partly cloudy, with a low around 11.

    Low: 11 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 30.

    High: 30 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog between 1am and 2am. Otherwise, partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy
    then Patchy
    Fog

Detailed Forecast

Overnight
Patchy fog before 4am, then patchy fog after 5am. Areas of freezing fog. Otherwise, mostly clear, with a low around 16. Calm wind.
Sunday
Patchy fog before 11am. Areas of freezing fog before 11am. Otherwise, mostly sunny, with a high near 34. Calm wind.
Sunday Night
Patchy fog after 8pm. Otherwise, mostly clear, with a low around 10. Calm wind.
M.L.King Day
Patchy fog before 11am. Otherwise, sunny, with a high near 32. Calm wind.
Monday Night
Patchy fog before 2am, then patchy fog after 4am. Otherwise, partly cloudy, with a low around 13. Calm wind.
Tuesday
Partly sunny, with a high near 36.
Tuesday Night
Patchy fog between 10pm and 5am. Otherwise, partly cloudy, with a low around 11.
Wednesday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 30.
Wednesday Night
Patchy fog between 1am and 2am. Otherwise, partly cloudy, with a low around 10.
Thursday
Patchy fog between 8am and 9am. Otherwise, mostly sunny, with a high near 33.
Thursday Night
A chance of snow. Patchy fog. Otherwise, mostly cloudy, with a low around 12.
Friday
Snow likely. Mostly cloudy, with a high near 26.
Friday Night
Snow likely. Mostly cloudy, with a low around 3.
Saturday
Snow likely. Mostly cloudy, with a high near 20.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greenough MT
 46.92°N 113.45°W (Elev. 3783 ft)
Last Update:
3:27 pm MST Jan 17, 2026
Forecast Valid:
12am MST Jan 18, 2026-6pm MST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation