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

52°F

11°C

Humidity 31%
Wind Speed SE 3 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 18 Apr 12:30 PM MDT
Extended Forecast for

Greenough MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 57. Light west wind.

    High: 57 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 25. Light and variable wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

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

    High: 68 °F

    Sunny

  • Sunday Night

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

    Low: 34 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly 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

This Afternoon
Mostly sunny, with a high near 57. Light west wind.
Tonight
Mostly clear, with a low around 25. Light and variable wind.
Sunday
Sunny, with a high near 68. Calm wind.
Sunday Night
Mostly cloudy, with a low around 34. Calm wind.
Monday
Mostly sunny, with a high near 75. Light and variable wind.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
A chance of rain, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 62.
Wednesday Night
Rain before 3am, then rain and snow. Cloudy, with a low around 33.
Thursday
Rain and snow likely. Snow level 4600 feet lowering to 4100 feet in the afternoon . Mostly cloudy, with a high near 47.
Thursday Night
A chance of rain and snow. Snow level 4600 feet lowering to 3800 feet after midnight . Mostly cloudy, with a low around 25.
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:
12:21 pm MDT Apr 18, 2026
Forecast Valid:
12pm MDT Apr 18, 2026-6pm MDT Apr 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