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

Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

Bearmouth I-90 MP 145.8 (MTBRM)

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

NA

21°F

-6°C

Humidity 92%
Wind Speed WSW 3 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 11 Jan 02:30 AM MST
Extended Forecast for

Greenough MT

  • Overnight

    Overnight: Partly cloudy, with a low around 15. Calm wind.

    Low: 15 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 36. Calm wind.

    High: 36 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Partly sunny, with a high near 43. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 43 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 30. West southwest wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain, mixing with snow after 8am, then gradually ending. Partly sunny, with a high near 46. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Rain/Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 23.

    Low: 23 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 10am. Otherwise, sunny, with a high near 44.

    High: 44 °F

    Areas Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 15. Calm wind.
Sunday
Partly sunny, with a high near 36. Calm wind.
Sunday Night
Patchy fog between 1am and 3am. Otherwise, mostly cloudy, with a low around 21. Calm wind.
Monday
Partly sunny, with a high near 43. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 30. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of rain, mixing with snow after 8am, then gradually ending. Partly sunny, with a high near 46. Chance of precipitation is 20%.
Tuesday Night
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 23.
Wednesday
Areas of fog before 10am. Otherwise, sunny, with a high near 44.
Wednesday Night
Mostly clear, with a low around 21.
Thursday
Mostly sunny, with a high near 39.
Thursday Night
Patchy fog. Otherwise, partly cloudy, with a low around 15.
Friday
Patchy fog. Otherwise, mostly sunny, with a high near 34.
Friday Night
Patchy fog. Otherwise, partly cloudy, with a low around 14.
Saturday
Sunny, with a high near 37.
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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:
1:02 am MST Jan 11, 2026
Forecast Valid:
2am MST Jan 11, 2026-6pm MST Jan 17, 2026
 
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Additional Resources

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Chance of Precipitation