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

Ken Jernstedt Airfield (K4S2)

Lat: 45.67457°NLon: 121.53493°WElev: 600.0ft.

Overcast

39°F

4°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 26 Dec 01:55 AM PST
Extended Forecast for

5 Miles SE BZ Corner WA

  • Overnight

    Overnight: A chance of rain before 4am, then rain likely, possibly mixed with snow. Cloudy, with a low around 33. Calm wind. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain/Snow
    Likely

  • Friday

    Friday: Rain, possibly mixed with snow, mainly before 4pm. High near 40. West wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow
    Likely then
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow before 7pm, then snow. Steady temperature around 34. West wind 16 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 34 °F

    Rain/Snow
    then Snow
    Likely

  • Saturday

    Saturday: A 40 percent chance of snow before 10am. Partly sunny, with a high near 37. West wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 37 °F

    Chance Snow
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26. West wind 3 to 6 mph.

    Low: 26 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of rain before 4am, then rain likely, possibly mixed with snow. Cloudy, with a low around 33. Calm wind. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
Rain, possibly mixed with snow, mainly before 4pm. High near 40. West wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday Night
A chance of rain and snow before 7pm, then snow. Steady temperature around 34. West wind 16 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
A 40 percent chance of snow before 10am. Partly sunny, with a high near 37. West wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly cloudy, with a low around 26. West wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 35.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Partly sunny, with a high near 35.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Partly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A slight chance of rain and snow. Mostly cloudy, with a high near 38.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 30.
New Year's Day
Rain and snow likely. Mostly cloudy, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SE BZ Corner WA
 45.81°N 121.45°W (Elev. 1801 ft)
Last Update:
1:58 am PST Dec 26, 2025
Forecast Valid:
2am PST Dec 26, 2025-6pm PST Jan 1, 2026
 
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