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

Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

NA

18°F

-8°C

Humidity 86%
Wind Speed SE 0 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Last update 28 Jan 03:00 AM MST
Extended Forecast for

12 Miles W Marysville MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 20. West southwest wind around 17 mph, with gusts as high as 20 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow between 2pm and 4pm. Cloudy, with a high near 23. Breezy, with a west southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 20%.

    High: 23 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. Breezy, with a west wind 18 to 25 mph, with gusts as high as 36 mph.

    Low: 19 °F

    Mostly Cloudy
    and Breezy

  • Thursday

    Thursday: Mostly cloudy, with a high near 25. Breezy, with a west wind 23 to 25 mph, with gusts as high as 31 mph.

    High: 25 °F

    Mostly Cloudy
    and Breezy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23. Breezy, with a west wind around 24 mph, with gusts as high as 28 mph.

    Low: 23 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 29. Breezy.

    High: 29 °F

    Slight Chance
    Snow and
    Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 27. Breezy.

    Low: 27 °F

    Breezy.
    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 32. Breezy.

    High: 32 °F

    Partly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 20. West southwest wind around 17 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of snow between 2pm and 4pm. Cloudy, with a high near 23. Breezy, with a west southwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 19. Breezy, with a west wind 18 to 25 mph, with gusts as high as 36 mph.
Thursday
Mostly cloudy, with a high near 25. Breezy, with a west wind 23 to 25 mph, with gusts as high as 31 mph.
Thursday Night
Mostly cloudy, with a low around 23. Breezy, with a west wind around 24 mph, with gusts as high as 28 mph.
Friday
A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 29. Breezy.
Friday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 27. Breezy.
Saturday
Partly sunny, with a high near 32. Breezy.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Mostly cloudy, with a high near 34.
Sunday Night
Mostly cloudy, with a low around 25.
Monday
A chance of snow. Partly sunny, with a high near 29. Breezy.
Monday Night
A slight chance of snow. Mostly cloudy, with a low around 23. Breezy.
Tuesday
A slight chance of snow. Partly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles W Marysville MT
 46.77°N 112.54°W (Elev. 8199 ft)
Last Update:
2:07 am MST Jan 28, 2026
Forecast Valid:
3am MST Jan 28, 2026-6pm MST Feb 3, 2026
 
Forecast Discussion
 
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Additional Resources

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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