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

Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

77°F

25°C

Humidity 19%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Heat Index77°F (25°C)
Last update 20 Apr 05:45 PM MDT
Extended Forecast for

Greenough MT

  • Tonight

    Tonight: Partly cloudy, with a low around 38. Light and variable wind.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain, then showers and possibly a thunderstorm after noon. High near 61. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 61 °F

    Chance Rain
    then Showers

  • Wednesday Night

    Wednesday Night: Rain. Low around 33. West wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 33 °F

    Rain

  • Thursday

    Thursday: Rain before 9am, then rain and snow showers. Some thunder is also possible. Snow level 4400 feet. High near 45. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow likely before midnight, then a chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Friday

    Friday: A chance of snow. Partly sunny, with a high near 44.

    High: 44 °F

    Chance Snow

  • Friday Night

    Friday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 38. Light and variable wind.
Tuesday
Mostly sunny, with a high near 82. Light and variable wind.
Tuesday Night
Partly cloudy, with a low around 40. Calm wind.
Wednesday
A chance of rain, then showers and possibly a thunderstorm after noon. High near 61. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain. Low around 33. West wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain before 9am, then rain and snow showers. Some thunder is also possible. Snow level 4400 feet. High near 45. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Rain and snow likely before midnight, then a chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
A chance of snow. Partly sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 19.
Saturday
Mostly sunny, with a high near 47.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Partly cloudy, with a low around 25.
Monday
A slight chance of rain. Snow level rising to 5500 feet in the afternoon. Mostly sunny, with a high near 57.
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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 pm MDT Apr 20, 2026
Forecast Valid:
6pm MDT Apr 20, 2026-6pm MDT Apr 27, 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