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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

BNSF Java East (JVEMT)

Lat: 48.23587°NLon: 113.56453°WElev: 4043.0ft.

NA

33°F

1°C

Humidity 100%
Wind Speed WNW 1 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 26 Dec 01:00 AM MST
Extended Forecast for

21 Miles E Swan Lake MT

Winter Weather Advisory December 26, 08:00am until December 27, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 26. South southwest wind around 10 mph.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Snow. The snow could be heavy at times. Patchy blowing snow after 8am. High near 28. South wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    High: 28 °F

    Heavy Snow
    and Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow. Widespread blowing snow, mainly after 11pm. Low around 8. Wind chill values as low as -4. Windy, with a southwest wind 23 to 31 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 8 °F

    Snow and
    Blowing Snow

  • Saturday

    Saturday: Snow. The snow could be heavy at times. Widespread blowing snow, mainly before 8am. High near 16. Wind chill values as low as -12. Breezy, with a west southwest wind 21 to 26 mph becoming north northwest 10 to 15 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    High: 16 °F

    Heavy Snow
    and Blowing
    Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 0. North northwest wind 6 to 8 mph becoming west southwest after midnight.

    Low: 0 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 12.

    High: 12 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 18.

    High: 18 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 26. South southwest wind around 10 mph.
Friday
Snow. The snow could be heavy at times. Patchy blowing snow after 8am. High near 28. South wind 10 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Friday Night
Snow. Widespread blowing snow, mainly after 11pm. Low around 8. Wind chill values as low as -4. Windy, with a southwest wind 23 to 31 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow. The snow could be heavy at times. Widespread blowing snow, mainly before 8am. High near 16. Wind chill values as low as -12. Breezy, with a west southwest wind 21 to 26 mph becoming north northwest 10 to 15 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Saturday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around 0. North northwest wind 6 to 8 mph becoming west southwest after midnight.
Sunday
Partly sunny, with a high near 12.
Sunday Night
Mostly cloudy, with a low around 6.
Monday
Mostly cloudy, with a high near 18.
Monday Night
Mostly cloudy, with a low around 14.
Tuesday
Mostly cloudy, with a high near 24.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
A chance of snow. Mostly cloudy, with a high near 27.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 19.
New Year's Day
A chance of snow. Mostly cloudy, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
21 Miles E Swan Lake MT
 47.99°N 113.41°W (Elev. 6601 ft)
Last Update:
1:03 am MST Dec 26, 2025
Forecast Valid:
2am MST Dec 26, 2025-6pm MST Jan 1, 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