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

37°F

3°C

Humidity 100%
Wind Speed WNW 3 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Last update 25 Dec 03:00 PM MST
Extended Forecast for

19 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

  • Christmas Day

    Christmas Day: Snow likely, mainly after 5pm. Snow level 6000 feet. Partly sunny, with a high near 33. South southwest wind around 9 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 33 °F

    Snow Likely

  • Tonight

    Tonight: Snow likely, mainly before 2am. Mostly cloudy, with a low around 23. South wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Snow Likely

  • Friday

    Friday: Snow. Patchy blowing snow after 5pm. High near 28. South wind 8 to 17 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 28 °F

    Snow and
    Patchy
    Blowing Snow

  • Friday Night

    Friday Night: Snow. Widespread blowing snow, mainly between 11pm and 5am. Low around 7. Wind chill values as low as -7. Windy, with a west southwest wind 21 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 7 °F

    Snow and
    Blowing Snow

  • Saturday

    Saturday: Snow. Widespread blowing snow, mainly before 8am. High near 16. Breezy, with a west wind 21 to 26 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 16 °F

    Snow and
    Blowing Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around -1.

    Low: -1 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 14.

    High: 14 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 4.

    Low: 4 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 20.

    High: 20 °F

    Partly Sunny

Detailed Forecast

Christmas Day
Snow likely, mainly after 5pm. Snow level 6000 feet. Partly sunny, with a high near 33. South southwest wind around 9 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly before 2am. Mostly cloudy, with a low around 23. South wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday
Snow. Patchy blowing snow after 5pm. High near 28. South wind 8 to 17 mph becoming west in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Friday Night
Snow. Widespread blowing snow, mainly between 11pm and 5am. Low around 7. Wind chill values as low as -7. Windy, with a west southwest wind 21 to 31 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Saturday
Snow. Widespread blowing snow, mainly before 8am. High near 16. Breezy, with a west wind 21 to 26 mph decreasing to 9 to 14 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A 20 percent chance of snow before 11pm. Mostly cloudy, with a low around -1.
Sunday
Mostly sunny, with a high near 14.
Sunday Night
Partly cloudy, with a low around 4.
Monday
Partly sunny, with a high near 20.
Monday Night
Mostly cloudy, with a low around 12.
Tuesday
Mostly cloudy, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 17.
Wednesday
A chance of snow. Mostly cloudy, with a high near 29.
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 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
19 Miles E Swan Lake MT
 47.9°N 113.42°W (Elev. 5079 ft)
Last Update:
1:01 pm MST Dec 25, 2025
Forecast Valid:
4pm MST Dec 25, 2025-6pm MST Jan 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation