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

  • Overnight

    Overnight: Widespread dense fog, mainly between 2am and 3am.  Otherwise, partly cloudy, with a low around 41. Calm wind.

    Low: 41 °F

    Dense Fog

  • Wednesday

    Wednesday: Widespread dense fog, mainly before 10am.  Otherwise, mostly sunny, with a high near 55. Calm wind.

    High: 55 °F

    Dense Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Widespread dense fog, mainly after 4am.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Dense Fog

  • Thursday

    Thursday: Widespread dense fog, mainly before 9am.  Otherwise, mostly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Dense Fog
    then Sunny

  • Thursday Night

    Thursday Night: Areas of fog.  Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Areas Fog

  • Friday

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

    High: 61 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: Widespread fog, mainly after 3am.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Fog

Detailed Forecast

Overnight
Widespread dense fog, mainly between 2am and 3am. Otherwise, partly cloudy, with a low around 41. Calm wind.
Wednesday
Widespread dense fog, mainly before 10am. Otherwise, mostly sunny, with a high near 55. Calm wind.
Wednesday Night
Widespread dense fog, mainly after 4am. Otherwise, mostly clear, with a low around 42. Calm wind.
Thursday
Widespread dense fog, mainly before 9am. Otherwise, mostly sunny, with a high near 58. Calm wind.
Thursday Night
Areas of fog. Otherwise, mostly clear, with a low around 43. Calm wind.
Friday
Patchy fog before 11am. Otherwise, sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Sunny, with a high near 64.
Saturday Night
Widespread fog, mainly after 3am. Otherwise, partly cloudy, with a low around 42.
Sunday
Widespread fog, mainly before 10am. Otherwise, partly sunny, with a high near 61.
Sunday Night
Widespread fog. Otherwise, mostly cloudy, with a low around 44.
Monday
A chance of rain. Widespread fog. Otherwise, mostly cloudy, with a high near 61.
Monday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 50.
Tuesday
A chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa CA
 38.45°N 122.73°W (Elev. 131 ft)
12:26 am PST Dec 10, 2025
1am 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