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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

76°F

24°C

Humidity 24%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Heat Index77°F (25°C)
Last update 12 May 08:00 PM MDT
Extended Forecast for

8 Miles SE Greenough MT

Wind Advisory May 13, 12:00pm until May 14, 12:00am
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms between 1pm and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 76. Light and variable wind becoming west 9 to 14 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Partly Sunny
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain and snow, mainly before 4am. Snow level 8200 feet lowering to 6100 feet after midnight . Mostly cloudy, with a low around 40. West southwest wind 13 to 17 mph, with gusts as high as 43 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 40 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 52. West wind 13 to 17 mph, with gusts as high as 45 mph.

    High: 52 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36. West wind 6 to 13 mph, with gusts as high as 34 mph.

    Low: 36 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: A slight chance of rain between midnight and 3am, then a slight chance of snow after 3am. Snow level 6700 feet lowering to 5700 feet after midnight . Partly cloudy, with a low around 35. Chance of precipitation is 20%.

    Low: 35 °F

    Partly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Saturday

    Saturday: A slight chance of snow before noon. Partly sunny, with a high near 47.

    High: 47 °F

    Slight Chance
    Snow then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 52. Light and variable wind.
Wednesday
A chance of showers and thunderstorms between 1pm and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 76. Light and variable wind becoming west 9 to 14 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of rain and snow, mainly before 4am. Snow level 8200 feet lowering to 6100 feet after midnight . Mostly cloudy, with a low around 40. West southwest wind 13 to 17 mph, with gusts as high as 43 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 52. West wind 13 to 17 mph, with gusts as high as 45 mph.
Thursday Night
Mostly clear, with a low around 36. West wind 6 to 13 mph, with gusts as high as 34 mph.
Friday
Sunny, with a high near 56.
Friday Night
A slight chance of rain between midnight and 3am, then a slight chance of snow after 3am. Snow level 6700 feet lowering to 5700 feet after midnight . Partly cloudy, with a low around 35. Chance of precipitation is 20%.
Saturday
A slight chance of snow before noon. Partly sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
A slight chance of snow after noon. Partly sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 31.
Monday
Mostly sunny, with a high near 54.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Mostly sunny, with a high near 60.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SE Greenough MT
 46.83°N 113.33°W (Elev. 5689 ft)
Last Update:
2:01 pm MDT May 12, 2026
Forecast Valid:
8pm MDT May 12, 2026-6pm MDT May 19, 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