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

Hazardous Weather Conditions

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

unknown precip

33°F

1°C

Humidity 98%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 03 Apr 01:45 AM MDT
Extended Forecast for

Greenough MT

Winter Weather Advisory until April 3, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until April 3, 12:00pm

    NOW until 12:00pm Fri

    Winter Weather Advisory

  • Overnight

    Low: 28 °F

    Slight Chance
    Snow and
    Patchy Fog

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 47. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 47 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 22. West wind around 5 mph becoming calm in the evening.

    Low: 22 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, sunny, with a high near 56. Calm wind becoming west around 6 mph in the afternoon.

    High: 56 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 26. Light and variable wind.

    Low: 26 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Overnight
A 20 percent chance of snow before 4am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 28. Calm wind.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 47. Calm wind becoming west southwest around 6 mph in the afternoon.
Friday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 22. West wind around 5 mph becoming calm in the evening.
Saturday
Areas of fog before 9am. Otherwise, sunny, with a high near 56. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 26. Light and variable wind.
Sunday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 60.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
Partly sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Mostly sunny, with a high near 61.
Tuesday Night
A slight chance of rain and snow. Partly cloudy, with a low around 30.
Wednesday
A chance of rain and snow. Snow level 4600 feet lowering to 3800 feet in the afternoon . Partly sunny, with a high near 48.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 22.
Thursday
A chance of snow. Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Greenough MT
 46.92°N 113.45°W (Elev. 3783 ft)
Last Update:
2:01 am MDT Apr 3, 2026
Forecast Valid:
2am MDT Apr 3, 2026-6pm MDT Apr 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation