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

DEE FLAT (DEFO)

Lat: 45.58639°NLon: 121.64056°WElev: 1260.0ft.

NA

40°F

4°C

Humidity 97%
Wind Speed N 2 MPH
Barometer NA
Dewpoint 39°F (4°C)
Visibility NA
Last update 25 Dec 01:30 PM PST
Extended Forecast for

7 Miles NW Dee OR

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

  • Christmas Day

    Christmas Day: A chance of rain and snow showers, mainly after 4pm. Snow level 4400 feet. Mostly cloudy, with a high near 36. South southeast wind around 6 mph. Chance of precipitation is 30%. Total daytime snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance
    Rain/Snow

  • Tonight

    Tonight: Snow showers, mainly after 3am. Low around 31. South wind 6 to 8 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance Snow
    Showers then
    Snow Showers

  • Friday

    Friday: Snow showers likely before 7am, then snow, mainly after 7am. Temperature rising to near 32 by 10am, then falling to around 28 during the remainder of the day. Breezy, with a west wind 10 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    High: 32 °F⇓

    Snow and
    Breezy

  • Friday Night

    Friday Night: Snow. Low around 27. Windy, with a west wind 25 to 28 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 27 °F

    Snow and
    Windy

  • Saturday

    Saturday: Snow likely before 10am, then a slight chance of snow showers after 10am. Mostly cloudy, with a high near 29. Windy, with a west wind 13 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Snow Likely
    and Windy

  • Saturday Night

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

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

Detailed Forecast

Christmas Day
A chance of rain and snow showers, mainly after 4pm. Snow level 4400 feet. Mostly cloudy, with a high near 36. South southeast wind around 6 mph. Chance of precipitation is 30%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow showers, mainly after 3am. Low around 31. South wind 6 to 8 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely before 7am, then snow, mainly after 7am. Temperature rising to near 32 by 10am, then falling to around 28 during the remainder of the day. Breezy, with a west wind 10 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Friday Night
Snow. Low around 27. Windy, with a west wind 25 to 28 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Saturday
Snow likely before 10am, then a slight chance of snow showers after 10am. Mostly cloudy, with a high near 29. Windy, with a west wind 13 to 23 mph, with gusts as high as 41 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 29.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Partly sunny, with a high near 32.
Tuesday Night
A slight chance of rain and snow. Snow level 5700 feet. Mostly cloudy, with a low around 25.
Wednesday
A chance of rain and snow. Snow level 5300 feet. Mostly cloudy, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NW Dee OR
 45.64°N 121.71°W (Elev. 4012 ft)
Last Update:
1:45 pm PST Dec 25, 2025
Forecast Valid:
2pm PST Dec 25, 2025-6pm PST Dec 31, 2025
 
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Additional Resources

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Chance of Precipitation