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

STEHEKIN-AIRSTRIP (STRW1)

Lat: 48.34694°NLon: 120.72028°WElev: 1230.0ft.

NA

30°F

-1°C

Humidity 98%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 25 Dec 05:01 AM PST
Extended Forecast for

Trinity WA

Winter Weather Advisory December 26, 04:00am until December 26, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Christmas Day

    Christmas Day: Snow, mainly after 7am. High near 32. North wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 90%. Total daytime snow accumulation of 2 to 4 inches possible.

    High: 32 °F

    Snow

  • Tonight

    Tonight: Snow likely before 1am, then a chance of snow after 4am. Mostly cloudy, with a low around 25. Light south wind. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 25 °F

    Snow Likely

  • Friday

    Friday: Snow, mainly after 7am. The snow could be heavy at times. High near 32. South wind 5 to 8 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 32 °F

    Heavy Snow

  • Friday Night

    Friday Night: Snow, mainly before 10pm. Low around 17. West wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 17 °F

    Snow then
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 10am. Mostly sunny, with a high near 25. Northwest wind around 7 mph.

    High: 25 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

Detailed Forecast

Christmas Day
Snow, mainly after 7am. High near 32. North wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 90%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
Snow likely before 1am, then a chance of snow after 4am. Mostly cloudy, with a low around 25. Light south wind. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow, mainly after 7am. The snow could be heavy at times. High near 32. South wind 5 to 8 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Friday Night
Snow, mainly before 10pm. Low around 17. West wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Saturday
A 20 percent chance of snow before 10am. Mostly sunny, with a high near 25. Northwest wind around 7 mph.
Saturday Night
Partly cloudy, with a low around 13.
Sunday
Mostly sunny, with a high near 31.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
Partly sunny, with a high near 35.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 38.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Trinity WA
 48.07°N 120.87°W (Elev. 4396 ft)
Last Update:
2:17 am PST Dec 25, 2025
Forecast Valid:
6am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation