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

Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

39°F

4°C

Humidity 99%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 13 Apr 02:00 AM MDT
Extended Forecast for

5 Miles SSE Greenough MT

  • Overnight

    Overnight: A chance of rain showers before 3am, then a chance of rain and snow showers between 3am and 5am, then a chance of snow showers after 5am. Snow level 6600 feet lowering to 5900 feet. Mostly cloudy, with a low around 36. South southwest wind around 6 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance
    Rain/Snow

  • Monday

    Monday: A chance of snow showers before noon, then a chance of rain and snow showers. Mostly cloudy, with a high near 45. West wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 45 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Monday Night

    Monday Night: A slight chance of rain and snow showers before 10pm. Mostly cloudy, with a low around 33. West wind 8 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. West wind 8 to 11 mph, with gusts as high as 26 mph.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow showers after midnight. Mostly cloudy, with a low around 35. West wind 7 to 11 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow showers. High near 46. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 46 °F

    Snow Showers
    Likely then
    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers. Low around 27. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 27 °F

    Snow Showers
    then Snow
    Showers
    Likely

  • Thursday

    Thursday: Snow showers. Some thunder is also possible. Cloudy, with a high near 36.

    High: 36 °F

    Snow Showers

  • Thursday Night

    Thursday Night: A chance of snow, mainly before midnight. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Chance Snow

Detailed Forecast

Overnight
A chance of rain showers before 3am, then a chance of rain and snow showers between 3am and 5am, then a chance of snow showers after 5am. Snow level 6600 feet lowering to 5900 feet. Mostly cloudy, with a low around 36. South southwest wind around 6 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Monday
A chance of snow showers before noon, then a chance of rain and snow showers. Mostly cloudy, with a high near 45. West wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.
Monday Night
A slight chance of rain and snow showers before 10pm. Mostly cloudy, with a low around 33. West wind 8 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 48. West wind 8 to 11 mph, with gusts as high as 26 mph.
Tuesday Night
A 30 percent chance of snow showers after midnight. Mostly cloudy, with a low around 35. West wind 7 to 11 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.
Wednesday
Snow showers. High near 46. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow showers. Low around 27. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday
Snow showers. Some thunder is also possible. Cloudy, with a high near 36.
Thursday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 24.
Friday
A chance of snow. Partly sunny, with a high near 41.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Mostly sunny, with a high near 50.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
A slight chance of rain and snow. Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Greenough MT
 46.84°N 113.4°W (Elev. 5863 ft)
Last Update:
2:01 am MDT Apr 13, 2026
Forecast Valid:
2am MDT Apr 13, 2026-6pm MDT Apr 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