Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. 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

Santa Rosa CA

  • Tonight

    Tonight: Areas of dense fog.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Areas Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before noon.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 66. Calm wind.

    High: 66 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog.  Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 11am.  Otherwise, sunny, with a high near 68. Calm wind.

    High: 68 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog before 1am.  Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, mostly sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog between 10pm and 11pm.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog
    then Partly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Patchy Fog

Detailed Forecast

Tonight
Areas of dense fog. Otherwise, mostly clear, with a low around 42. Calm wind.
Wednesday
Areas of dense fog before noon. Otherwise, partly sunny, then gradually becoming sunny, with a high near 66. Calm wind.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 45. Calm wind.
Thursday
Areas of fog before 11am. Otherwise, sunny, with a high near 68. Calm wind.
Thursday Night
Patchy fog before 1am. Otherwise, mostly clear, with a low around 45. Calm wind.
Friday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 66.
Friday Night
Patchy fog between 10pm and 11pm. Otherwise, partly cloudy, with a low around 43.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43.
Sunday
Areas of fog before noon. Otherwise, partly sunny, with a high near 62.
Sunday Night
A slight chance of rain. Areas of fog. Otherwise, mostly cloudy, with a low around 46.
Monday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 62.
Monday Night
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a low around 48.
Tuesday
A chance of rain. Areas of fog. Otherwise, partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa CA
 38.45°N 122.73°W (Elev. 131 ft)
12:26 pm PST Dec 9, 2025
9pm PST Dec 9, 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