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

KF6YUA Sebastopol (AR323)

Lat: 38.3803°NLon: 122.8242°WElev: 230.0ft.

NA

58°F

14°C

Humidity 79%
Wind Speed NNE 7 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 51°F (11°C)
Visibility NA
Last update 25 Dec 01:53 PM PST
Extended Forecast for

4 Miles SSE Santa Rosa CA

Flood Watch December 25, 02:11pm until December 26, 10:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch December 25, 02:11pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Christmas Day

    High: 51 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 10pm, then showers likely. Some of the storms could be severe. Low around 46. South wind 9 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Severe
    Thunderstorms
    then Showers
    Likely

  • Friday

    Friday: Showers, with thunderstorms also possible after 4pm. High near 51. South southeast wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 51 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. South southeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 40 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 52. North wind 3 to 5 mph.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Areas of frost after 3am. Otherwise, partly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 53.

    High: 53 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Patchy frost after 1am. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear
    then Patchy
    Frost

Detailed Forecast

Christmas Day
Showers and possibly a thunderstorm. Some of the storms could be severe. High near 51. South wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 10pm, then showers likely. Some of the storms could be severe. Low around 46. South wind 9 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers, with thunderstorms also possible after 4pm. High near 51. South southeast wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. South southeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 52. North wind 3 to 5 mph.
Saturday Night
Areas of frost after 3am. Otherwise, partly cloudy, with a low around 35.
Sunday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 53.
Sunday Night
Patchy frost after 1am. Otherwise, mostly clear, with a low around 34.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 55.
Monday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 36.
Tuesday
Patchy frost. Otherwise, sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Santa Rosa CA
 38.41°N 122.66°W (Elev. 482 ft)
Last Update:
12:26 pm PST Dec 25, 2025
Forecast Valid:
2pm PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation