Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. 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 96%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 44°F (7°C)
Visibility 5.00 mi
Last update 20 Jan 07:53 PM PST
Extended Forecast for

Guerneville CA

  • Tonight

    Tonight: Areas of fog.  Otherwise, cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Areas Fog

  • Wednesday

    Wednesday: Cloudy, with a high near 60. Calm wind.

    High: 60 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Cloudy then
    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 7am.  Otherwise, partly sunny, with a high near 61. Light and variable wind.

    High: 61 °F

    Areas Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

Detailed Forecast

Tonight
Areas of fog. Otherwise, cloudy, with a low around 47. Calm wind.
Wednesday
Cloudy, with a high near 60. Calm wind.
Wednesday Night
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 47. Calm wind.
Thursday
Areas of fog before 7am. Otherwise, partly sunny, with a high near 61. Light and variable wind.
Thursday Night
Partly cloudy, with a low around 46. Calm wind.
Friday
Mostly sunny, with a high near 60.
Friday Night
Mostly clear, with a low around 43.
Saturday
Sunny, with a high near 61.
Saturday Night
Partly cloudy, with a low around 41.
Sunday
Mostly cloudy, with a high near 59.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly cloudy, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.49°N 123°W (Elev. 197 ft)
7:24 pm PST Jan 20, 2026
8pm PST Jan 20, 2026-6pm PST Jan 27, 2026
 
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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