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 >

Current conditions at

Chief Joseph Dam (CJDW)

Lat: 47.99083°NLon: 119.63556°WElev: 996.0ft.

NA

34°F

1°C

Humidity 94%
Wind Speed S 7 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 26 Dec 02:00 AM PST
Extended Forecast for

4 Miles N Mansfield WA

Dense Fog Advisory December 26, 02:43am until December 26, 06:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 26, 02:43am until December 26, 06:00am

    NOW until 6:00am Fri

    Dense Fog Advisory

  • Overnight

    Low: 29 °F

    Patchy Dense
    Freezing Fog

  • Friday

    Friday: A chance of rain and snow between 1pm and 3pm, then a chance of snow after 3pm.  Patchy freezing fog before 7am. Partly sunny, with a high near 34. South wind 7 to 15 mph.  Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 34 °F

    Patchy
    Freezing Fog
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly before 7pm.  Partly cloudy, with a low around 19. West wind 10 to 14 mph becoming northwest after midnight.  Little or no snow accumulation expected.

    Low: 19 °F

    Chance Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 24. North wind 11 to 14 mph.

    High: 24 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 15. North wind around 8 mph.

    Low: 15 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 26.

    High: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Patchy dense freezing fog after 4am. Mostly cloudy, with a low around 29. South wind around 6 mph.
Friday
A chance of rain and snow between 1pm and 3pm, then a chance of snow after 3pm. Patchy freezing fog before 7am. Partly sunny, with a high near 34. South wind 7 to 15 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday Night
A 30 percent chance of snow, mainly before 7pm. Partly cloudy, with a low around 19. West wind 10 to 14 mph becoming northwest after midnight. Little or no snow accumulation expected.
Saturday
Sunny, with a high near 24. North wind 11 to 14 mph.
Saturday Night
Mostly cloudy, with a low around 15. North wind around 8 mph.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Mostly cloudy, with a low around 15.
Monday
Mostly cloudy, with a high near 26.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Mostly cloudy, with a high near 33.
Wednesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 26.
New Year's Day
A 20 percent chance of snow. Mostly cloudy, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Mansfield WA
 47.87°N 119.64°W (Elev. 2201 ft)
1:32 am PST Dec 26, 2025
2am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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