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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

47°F

8°C

Humidity 37%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 18 Apr 10:30 AM MDT
Extended Forecast for

Greenough MT

  • Today

    Today: Sunny, with a high near 56. Light south southwest wind.

    High: 56 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. Calm wind.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74. Light and variable wind.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 62.

    High: 62 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 56. Light south southwest wind.
Tonight
Mostly clear, with a low around 25. Calm wind.
Sunday
Sunny, with a high near 68. Calm wind.
Sunday Night
Partly cloudy, with a low around 33. Calm wind.
Monday
Mostly sunny, with a high near 74. Light and variable wind.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
A chance of rain, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 62.
Wednesday Night
Rain. Mostly cloudy, with a low around 34.
Thursday
Rain and snow likely. Snow level 4800 feet lowering to 4200 feet in the afternoon . Mostly cloudy, with a high near 49.
Thursday Night
A chance of rain and snow. Snow level 4500 feet lowering to 3800 feet after midnight . Mostly cloudy, with a low around 26.
Friday
A slight chance of rain and snow. Partly sunny, with a high near 50.
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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 18, 2026
Forecast Valid:
10am MDT Apr 18, 2026-6pm MDT Apr 24, 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