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

BOULDER CREEK (BOFO3)

Lat: 44.72194°NLon: 122.00306°WElev: 3543.0ft.

NA

33°F

1°C

Humidity 100%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 25 Dec 04:58 PM PST
Extended Forecast for

Mt Jefferson OR

Winter Weather Advisory December 26, 04:00am until December 27, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: Snow showers, mainly after 1am. The snow could be heavy at times. Low around 21. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.

    Low: 21 °F

    Chance Snow
    Showers then
    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow, mainly after 1pm. The snow could be heavy at times. High near 22. Wind chill values as low as zero. Windy, with a west wind 23 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.

    High: 22 °F

    Windy. Chance
    Snow then
    Heavy Snow

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times. Low around 15. Wind chill values as low as -8. Very windy, with a west wind around 39 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    Low: 15 °F

    Heavy Snow
    and Very
    Windy

  • Saturday

    Saturday: Snow before 10am, then a chance of snow showers, mainly between 10am and 4pm. High near 17. Wind chill values as low as -6. Very windy, with a west wind 29 to 34 mph decreasing to 18 to 23 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 17 °F

    Snow and Very
    Windy then
    Chance Snow
    Showers and
    Windy

  • Saturday Night

    Saturday Night: A 20 percent chance of snow showers before 10pm. Mostly cloudy, with a low around 13. West wind around 9 mph.

    Low: 13 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 23.

    High: 23 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow showers, mainly after 1am. The snow could be heavy at times. Low around 21. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.
Friday
Snow, mainly after 1pm. The snow could be heavy at times. High near 22. Wind chill values as low as zero. Windy, with a west wind 23 to 29 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.
Friday Night
Snow. The snow could be heavy at times. Low around 15. Wind chill values as low as -8. Very windy, with a west wind around 39 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Saturday
Snow before 10am, then a chance of snow showers, mainly between 10am and 4pm. High near 17. Wind chill values as low as -6. Very windy, with a west wind 29 to 34 mph decreasing to 18 to 23 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday Night
A 20 percent chance of snow showers before 10pm. Mostly cloudy, with a low around 13. West wind around 9 mph.
Sunday
Partly sunny, with a high near 23.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 26.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
A slight chance of snow. Mostly cloudy, with a high near 34.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 25.
New Year's Day
Snow likely. Mostly cloudy, with a high near 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mt Jefferson OR
 44.69°N 121.81°W (Elev. 7598 ft)
Last Update:
5:41 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