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

33°F

1°C

Humidity 98%
Wind Speed WSW 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 25 Dec 01:01 PM PST
Extended Forecast for

5 Miles ESE Trinity WA

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

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 22. South wind around 9 mph.

    Low: 22 °F

    Mostly Cloudy

  • Friday

    Friday: Snow after 7am. Temperature rising to near 23 by 11am, then falling to around 18 during the remainder of the day. Breezy, with a south wind 10 to 18 mph becoming west in the afternoon. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    High: 23 °F⇓

    Snow and
    Breezy

  • Friday Night

    Friday Night: Snow, mainly before 10pm. Low around 11. Wind chill values as low as -6. Breezy, with a west wind around 18 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 11 °F

    Breezy. Snow
    then Chance
    Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 10am. Partly sunny, with a high near 17. Wind chill values as low as -6. Northwest wind 11 to 17 mph.

    High: 17 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 7. Northwest wind around 10 mph.

    Low: 7 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 21.

    High: 21 °F

    Partly Sunny

  • Sunday Night

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

    Low: 14 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 25.

    High: 25 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 22. South wind around 9 mph.
Friday
Snow after 7am. Temperature rising to near 23 by 11am, then falling to around 18 during the remainder of the day. Breezy, with a south wind 10 to 18 mph becoming west in the afternoon. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Friday Night
Snow, mainly before 10pm. Low around 11. Wind chill values as low as -6. Breezy, with a west wind around 18 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Saturday
A 20 percent chance of snow before 10am. Partly sunny, with a high near 17. Wind chill values as low as -6. Northwest wind 11 to 17 mph.
Saturday Night
Mostly cloudy, with a low around 7. Northwest wind around 10 mph.
Sunday
Partly sunny, with a high near 21.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Mostly cloudy, with a high near 25.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Mostly cloudy, with a high near 29.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 23.
Wednesday
A 40 percent chance of snow. Mostly cloudy, with a high near 30.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 23.
New Year's Day
Snow likely. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Trinity WA
 48.05°N 120.74°W (Elev. 7060 ft)
Last Update:
11:57 pm PST Dec 25, 2025
Forecast Valid:
1am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation