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 ESE 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 24 Dec 09:06 PM PST
Extended Forecast for

11 Miles N Mazama WA

  • Tonight

    Tonight: Partly cloudy, with a low around 15. Southwest wind 7 to 9 mph becoming northwest after midnight.

    Low: 15 °F

    Partly Cloudy

  • Christmas Day

    Christmas Day: Snow, mainly after 1pm. High near 25. West wind around 7 mph becoming south in the morning. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 25 °F

    Chance Snow
    then Snow

  • Thursday Night

    Thursday Night: Snow, mainly before 10pm. Low around 20. West wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 20 °F

    Snow

  • Friday

    Friday: Snow. High near 23. Southwest wind around 11 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 23 °F

    Snow

  • Friday Night

    Friday Night: Snow, mainly before 10pm. Low around 5. Northwest wind around 14 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 5 °F

    Snow then
    Chance Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 15.

    High: 15 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 8.

    Low: 8 °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

Detailed Forecast

Tonight
Partly cloudy, with a low around 15. Southwest wind 7 to 9 mph becoming northwest after midnight.
Christmas Day
Snow, mainly after 1pm. High near 25. West wind around 7 mph becoming south in the morning. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Thursday Night
Snow, mainly before 10pm. Low around 20. West wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday
Snow. High near 23. Southwest wind around 11 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Friday Night
Snow, mainly before 10pm. Low around 5. Northwest wind around 14 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday
Mostly sunny, with a high near 15.
Saturday Night
Mostly cloudy, with a low around 8.
Sunday
Partly sunny, with a high near 21.
Sunday Night
Mostly cloudy, with a low around 14.
Monday
Mostly cloudy, with a high near 26.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Mostly cloudy, with a high near 31.
Tuesday Night
A 10 percent chance of snow. Mostly cloudy, with a low around 23.
Wednesday
A 30 percent chance of snow. Partly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles N Mazama WA
 48.77°N 120.43°W (Elev. 6358 ft)
Last Update:
9:17 pm PST Dec 24, 2025
Forecast Valid:
9pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation