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

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

heavy rain,mist

54°F

12°C

Humidity 93%
Wind Speed SSE 13 MPH
Barometer 29.56 in (1001.02 mb)
Dewpoint 52°F (11°C)
Visibility 4.00 mi
Last update 24 Dec 07:20 PM PST
Extended Forecast for

Santa Rosa CA

Flood Watch December 24, 07:37pm until December 26, 10:00pm
Wind Advisory December 24, 08:00pm until December 25, 10:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 24, 07:37pm until December 26, 10:00pm

    NOW until 10:00pm Fri

    Flood Watch

  • Tonight

    Low: 53 °F

    Showers and
    Breezy

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm. Some of the storms could be severe. High near 52. South southwest wind 11 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 52 °F

    Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: Showers. Steady temperature around 49. South wind 9 to 15 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 53. South wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 53 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. Light and variable wind. 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

  • Saturday

    Saturday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog between 1am and 2am. Patchy frost after 3am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Areas of frost before 7am. Otherwise, mostly sunny, with a high near 54.

    High: 54 °F

    Areas Frost
    and Patchy
    Fog then
    Sunny

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Steady temperature around 53. Breezy, with a south southeast wind 15 to 25 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
Showers and possibly a thunderstorm. Some of the storms could be severe. High near 52. South southwest wind 11 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers. Steady temperature around 49. South wind 9 to 15 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Showers and possibly a thunderstorm before 1pm, then showers between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 53. South wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. Light and variable wind. 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 53.
Saturday Night
Patchy fog between 1am and 2am. Patchy frost after 3am. Otherwise, mostly clear, with a low around 36.
Sunday
Patchy fog before 8am. Areas of frost before 7am. Otherwise, mostly sunny, with a high near 54.
Sunday Night
Patchy frost after 2am. Otherwise, mostly clear, with a low around 35.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 56.
Monday Night
Patchy fog. Patchy frost. Otherwise, mostly clear, with a low around 36.
Tuesday
Patchy fog. Patchy frost. Otherwise, sunny, with a high near 57.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa CA
 38.45°N 122.73°W (Elev. 131 ft)
Last Update:
4:56 pm PST Dec 24, 2025
Forecast Valid:
7pm PST Dec 24, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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