Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

45°F

7°C

Humidity 82%
Wind Speed N 0 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 11 Apr 02:00 AM MDT
Extended Forecast for

5 Miles SSE Greenough MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. South southeast wind around 8 mph.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm.  Partly sunny, with a high near 58. South southeast wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before 10pm.  Snow level 8000 feet lowering to 6700 feet after midnight . Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind 5 to 9 mph becoming light and variable  after midnight. Winds could gust as high as 20 mph.

    Low: 38 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Showers likely after noon.  Snow level 6600 feet rising to 7400 feet in the afternoon. Partly sunny, with a high near 55. Light and variable wind becoming east around 5 mph in the afternoon.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Mostly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 3am, then a chance of rain and snow showers.  Snow level 7600 feet lowering to 6300 feet after midnight . Low around 37. South wind around 6 mph becoming west northwest in the evening.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 37 °F

    Showers then
    Chance
    Rain/Snow

  • Monday

    Monday: Rain and snow showers before noon, then snow showers between noon and 3pm, then rain and snow showers after 3pm.  Snow level 5900 feet. High near 45. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow

  • Monday Night

    Monday Night: A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers between 9pm and midnight.  Mostly cloudy, with a low around 35. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 46.

    High: 46 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of snow after midnight.  Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. South southeast wind around 8 mph.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 58. South southeast wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 30 percent chance of showers, mainly before 10pm. Snow level 8000 feet lowering to 6700 feet after midnight . Mostly cloudy, then gradually becoming mostly clear, with a low around 38. West wind 5 to 9 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Sunday
Showers likely after noon. Snow level 6600 feet rising to 7400 feet in the afternoon. Partly sunny, with a high near 55. Light and variable wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain showers before 3am, then a chance of rain and snow showers. Snow level 7600 feet lowering to 6300 feet after midnight . Low around 37. South wind around 6 mph becoming west northwest in the evening. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
Rain and snow showers before noon, then snow showers between noon and 3pm, then rain and snow showers after 3pm. Snow level 5900 feet. High near 45. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday Night
A slight chance of rain and snow showers before 9pm, then a slight chance of snow showers between 9pm and midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, with a high near 46.
Tuesday Night
A chance of snow after midnight. Mostly cloudy, with a low around 33.
Wednesday
Snow. Mostly cloudy, with a high near 43.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 27.
Thursday
Snow likely. Mostly cloudy, with a high near 38.
Thursday Night
A slight chance of snow. Partly cloudy, with a low around 25.
Friday
A chance of snow. Mostly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Greenough MT
 46.84°N 113.4°W (Elev. 5863 ft)
2:01 am MDT Apr 11, 2026
2am MDT Apr 11, 2026-6pm MDT Apr 17, 2026
 
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