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

Winter Storm Bringing Widespread Hazardous Weather to the Eastern U.S.

A rapidly-intensifying winter storm continues to bring heavy snow, high winds, and blizzard conditions over the Upper Midwest and Great Lakes through today. An Arctic front will lead in a period of gusty to high winds and sharply colder temperatures over the entire eastern U.S. Heavy lake effect snow is then expected from Lakes Erie and Ontario through New Year's Day. Read More >

Current conditions at

JETTE (JETM8)

Lat: 47.76706°NLon: 114.23378°WElev: 3593.0ft.

NA

29°F

-2°C

Humidity 71%
Wind Speed SSE 2 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 29 Dec 12:43 PM MST
Extended Forecast for

Big Arm MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 29. Calm wind.

    High: 29 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 33. Calm wind.

    High: 33 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 35. Calm wind.

    High: 35 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 41.

    High: 41 °F

    Chance
    Rain/Snow
    then Chance
    Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 29. Calm wind.
Tonight
Partly cloudy, with a low around 23. Calm wind.
Tuesday
Partly sunny, with a high near 33. Calm wind.
Tuesday Night
Partly cloudy, with a low around 25. Calm wind.
Wednesday
Mostly sunny, with a high near 35. Calm wind.
Wednesday Night
Partly cloudy, with a low around 26.
New Year's Day
Mostly cloudy, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
A chance of rain and snow before 11am, then a chance of rain. Mostly cloudy, with a high near 41.
Friday Night
A chance of rain before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 36.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 42.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 35.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Big Arm MT
 47.8°N 114.28°W (Elev. 3061 ft)
Last Update:
1:01 pm MST Dec 29, 2025
Forecast Valid:
1pm MST Dec 29, 2025-6pm MST Jan 4, 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