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

10 Miles NW Mazama WA

  • Tonight

    Tonight: Snow, mainly before 7pm. Low around 16. Southwest wind 9 to 15 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 2 inches possible.

    Low: 16 °F

    Snow then
    Chance Snow

  • Friday

    Friday: Snow, mainly after 10am. Temperature falling to around 13 by 5pm. Wind chill values as low as -4. South wind around 17 mph becoming west in the afternoon. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 19 °F⇓

    Snow

  • Friday Night

    Friday Night: Snow, mainly before 10pm. Low around 2. Wind chill values as low as -20. Blustery, with a northwest wind around 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 2 °F

    Blustery.
    Snow then
    Chance Snow

  • Saturday

    Saturday: A 20 percent chance of snow before 10am. Sunny and cold, with a high near 8. Wind chill values as low as -20. Blustery, with a northwest wind 13 to 21 mph.

    High: 8 °F

    Slight Chance
    Snow and
    Blustery then
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 2. Northwest wind around 9 mph.

    Low: 2 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 16.

    High: 16 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 22.

    High: 22 °F

    Mostly Cloudy

  • Monday Night

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

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow, mainly before 7pm. Low around 16. Southwest wind 9 to 15 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 1 to 2 inches possible.
Friday
Snow, mainly after 10am. Temperature falling to around 13 by 5pm. Wind chill values as low as -4. South wind around 17 mph becoming west in the afternoon. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Friday Night
Snow, mainly before 10pm. Low around 2. Wind chill values as low as -20. Blustery, with a northwest wind around 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday
A 20 percent chance of snow before 10am. Sunny and cold, with a high near 8. Wind chill values as low as -20. Blustery, with a northwest wind 13 to 21 mph.
Saturday Night
Mostly cloudy, with a low around 2. Northwest wind around 9 mph.
Sunday
Partly sunny, with a high near 16.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Mostly cloudy, with a high near 22.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
A 10 percent chance of snow after 4pm. Mostly cloudy, with a high near 26.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22.
Wednesday
A 50 percent chance of snow. Mostly cloudy, with a high near 26.
Wednesday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 20.
New Year's Day
Snow likely. Mostly cloudy, with a high near 23. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NW Mazama WA
 48.73°N 120.58°W (Elev. 7267 ft)
Last Update:
3:48 pm PST Dec 25, 2025
Forecast Valid:
6pm PST Dec 25, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

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Chance of Precipitation