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

29°F

-2°C

Humidity 75%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 19 Apr 02:45 AM MDT
Extended Forecast for

Greenough MT

  • Overnight

    Overnight: Clear, with a low around 26. Calm wind.

    Low: 26 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 66. Calm wind.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Partly Cloudy

  • Monday

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

    High: 74 °F

    Sunny

  • Monday Night

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

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °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. Partly sunny, with a high near 63.

    High: 63 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Showers

Detailed Forecast

Overnight
Clear, with a low around 26. Calm wind.
Sunday
Sunny, with a high near 66. Calm wind.
Sunday Night
Partly cloudy, with a low around 34. Calm wind.
Monday
Sunny, with a high near 74. Light and variable wind.
Monday Night
Partly cloudy, with a low around 38. Calm wind.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 41.
Wednesday
A chance of rain, then showers and possibly a thunderstorm after noon. Partly sunny, with a high near 63.
Wednesday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 33.
Thursday
Rain and snow likely before noon, then a chance of rain. Snow level 4500 feet. Mostly cloudy, with a high near 49.
Thursday Night
A chance of rain and snow. Snow level 4900 feet lowering to 3800 feet after midnight . Mostly cloudy, with a low around 25.
Friday
A chance of rain and snow. Partly sunny, with a high near 48.
Friday Night
A slight chance of rain and snow. Snow level 4700 feet lowering to 3800 feet after midnight . Mostly cloudy, with a low around 24.
Saturday
A slight chance of rain and snow. Partly sunny, with a high near 50.
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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:
2:00 am MDT Apr 19, 2026
Forecast Valid:
3am MDT Apr 19, 2026-6pm MDT Apr 25, 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