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 >

Current conditions at

NCSB (NCSW1)

Lat: 48.42528°NLon: 120.14194°WElev: 1697.0ft.

NA

32°F

0°C

Humidity 100%
Wind Speed NW 4 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 25 Dec 12:06 AM PST
Extended Forecast for

13 Miles NNE Mazama WA

  • Overnight

    Overnight: Partly cloudy, with a low around 17. Southwest wind around 6 mph.

    Low: 17 °F

    Partly Cloudy

  • Christmas Day

    Christmas Day: Snow, mainly after 1pm. High near 30. Southeast wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 30 °F

    Chance Snow
    then Snow

  • Thursday Night

    Thursday Night: Snow, mainly before 10pm. Low around 22. West wind around 7 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 22 °F

    Snow

  • Friday

    Friday: Snow. High near 28. South wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 28 °F

    Snow

  • Friday Night

    Friday Night: Snow likely, mainly before 10pm. Mostly cloudy, with a low around 7. Northwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 7 °F

    Snow Likely
    then Chance
    Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 22.

    High: 22 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 10.

    Low: 10 °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 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 17. Southwest wind around 6 mph.
Christmas Day
Snow, mainly after 1pm. High near 30. Southeast wind around 6 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Thursday Night
Snow, mainly before 10pm. Low around 22. West wind around 7 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday
Snow. High near 28. South wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow likely, mainly before 10pm. Mostly cloudy, with a low around 7. Northwest wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Saturday
Mostly sunny, with a high near 22.
Saturday Night
Mostly cloudy, with a low around 10.
Sunday
Partly sunny, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly cloudy, with a high near 32.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly cloudy, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
A 30 percent chance of snow. Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNE Mazama WA
 48.78°N 120.31°W (Elev. 4570 ft)
Last Update:
9:17 pm PST Dec 24, 2025
Forecast Valid:
12am PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation