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

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

28°F

-2°C

Humidity 80%
Wind Speed E 0 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 09 Apr 07:30 AM MDT
Extended Forecast for

Greenough MT

  • Today

    Today: Sunny, with a high near 59. Calm wind.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 68. Calm wind.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38. Light north wind.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 65. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Chance Rain
    then Showers
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 37. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain
    then Slight
    Chance Rain

  • Sunday

    Sunday: A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 57. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 57 °F

    Chance Rain
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Rain

  • Monday

    Monday: Rain. Mostly cloudy, with a high near 50.

    High: 50 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 59. Calm wind.
Tonight
Mostly clear, with a low around 27. Calm wind.
Friday
Mostly sunny, with a high near 68. Calm wind.
Friday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38. Light north wind.
Saturday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 65. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 37. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 57. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Rain. Mostly cloudy, with a low around 35.
Monday
Rain. Mostly cloudy, with a high near 50.
Monday Night
A chance of rain before midnight. Mostly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 53.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
A chance of rain and snow. Snow level 4700 feet rising to 5700 feet in the afternoon. Mostly cloudy, with a high near 51.
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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:
2:01 am MDT Apr 9, 2026
Forecast Valid:
7am MDT Apr 9, 2026-6pm MDT Apr 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation