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

SAWMILL FLATS (MEFW1)

Lat: 46.9675°NLon: 121.08444°WElev: 3000.0ft.

NA

32°F

0°C

Humidity 100%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 26 Dec 12:25 AM PST
Extended Forecast for

White Pass WA

Winter Weather Advisory December 26, 04:00am until December 27, 07:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A 40 percent chance of snow. Mostly cloudy, with a low around 23. South wind around 6 mph.

    Low: 23 °F

    Chance Snow

  • Friday

    Friday: Snow, mainly after 7am. The snow could be heavy at times. High near 29. West wind 8 to 13 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

    High: 29 °F

    Heavy Snow

  • Friday Night

    Friday Night: Snow, mainly before 4am. The snow could be heavy at times. Low around 19. Breezy, with a west wind 20 to 23 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: 19 °F

    Heavy Snow
    and Breezy

  • Saturday

    Saturday: A 30 percent chance of snow before 10am. Partly sunny, with a high near 22. West wind 6 to 14 mph, with gusts as high as 29 mph.

    High: 22 °F

    Chance Snow
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 15. West wind 3 to 5 mph.

    Low: 15 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 40 percent chance of snow. Mostly cloudy, with a low around 23. South wind around 6 mph.
Friday
Snow, mainly after 7am. The snow could be heavy at times. High near 29. West wind 8 to 13 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.
Friday Night
Snow, mainly before 4am. The snow could be heavy at times. Low around 19. Breezy, with a west wind 20 to 23 mph, with gusts as high as 46 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Saturday
A 30 percent chance of snow before 10am. Partly sunny, with a high near 22. West wind 6 to 14 mph, with gusts as high as 29 mph.
Saturday Night
Mostly cloudy, with a low around 15. West wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
Mostly cloudy, with a high near 33.
Monday Night
Mostly cloudy, with a low around 25.
Tuesday
Mostly cloudy, with a high near 38.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 28.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 37.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 28.
New Year's Day
Snow likely. Mostly cloudy, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
White Pass WA
 46.64°N 121.37°W (Elev. 4672 ft)
Last Update:
12:46 am PST Dec 26, 2025
Forecast Valid:
1am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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Chance of Precipitation