National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Prolonged Extreme Cold; Eastern U.S. Winter Storm

Another Arctic blast will surge south across the northern Plains Thursday night, crossing the Midwest and reaching the Gulf Coast Friday night. Confidence continues to increase for significant heavy snow across much of the Southern Appalachians, Carolinas, and southern Mid-Atlantic Friday into Sunday. 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.

Fog

39°F

4°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.35 in (1027.77 mb)
Dewpoint 37°F (3°C)
Visibility 0.25 mi
Last update 29 Jan 02:35 AM PST
Extended Forecast for

Guerneville CA

Coastal Flood Advisory January 29, 06:00am until February 1, 12:00pm
Click here for hazard details and duration
Coastal Flood Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Thursday Night

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

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 65. Calm wind.

    High: 65 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain. Mostly cloudy, with a high near 62.

    High: 62 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 43. Calm wind.
Thursday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 65. Calm wind.
Thursday Night
Mostly cloudy, with a low around 46. Calm wind.
Friday
Partly sunny, with a high near 65. Calm wind.
Friday Night
Mostly cloudy, with a low around 46. Calm wind.
Saturday
Partly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
A slight chance of rain. Mostly cloudy, with a high near 62.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.49°N 123°W (Elev. 197 ft)
Last Update:
12:26 am PST Jan 29, 2026
Forecast Valid:
2am PST Jan 29, 2026-6pm PST Feb 4, 2026
 
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