Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Mist

45°F

7°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 43°F (6°C)
Visibility 6.00 mi
Last update 09 Dec 05:53 PM PST
Extended Forecast for

Guerneville CA

  • Today

    Today: Patchy fog between 8am and noon.  Otherwise, sunny, with a high near 55. Calm wind.

    High: 55 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 59. Calm wind.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62. Calm wind.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Partly
    Sunny

Detailed Forecast

Today
Patchy fog between 8am and noon. Otherwise, sunny, with a high near 55. Calm wind.
Tonight
Mostly clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 59. Calm wind.
Thursday Night
Mostly clear, with a low around 47. Calm wind.
Friday
Sunny, with a high near 62. Calm wind.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 64.
Saturday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 45.
Sunday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 61.
Sunday Night
A slight chance of rain after 4am. Patchy fog before midnight, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 47.
Monday
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a high near 61.
Monday Night
Rain likely. Widespread fog. Otherwise, mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Widespread fog. Otherwise, partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.52°N 122.98°W (Elev. 95 ft)
12:26 am PST Dec 10, 2025
5am PST Dec 10, 2025-6pm PST Dec 16, 2025
 
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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