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

Snow Squalls in the Northeast U.S. on Thursday; Heavy Rain Along the Gulf Coast

An arctic cold front will move through the Great Lakes and Northeast on Thursday, bringing moderate to heavy snow, strong winds, and possible whiteout conditions through Thursday afternoon. A storm system interacting with Gulf moisture will bring moderate to heavy rainfall to the western and central Gulf Coast on Thursday. Isolated instances of flash flooding will be possible. 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.

Clear

37°F

3°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 04 Dec 04:20 AM PST
Extended Forecast for

Guerneville CA

Coastal Flood Advisory December 4, 04:37am until December 7, 03:00pm
Cold Weather Advisory December 4, 04:37am until December 4, 08:00am
Click here for hazard details and duration
Coastal Flood Advisory
...
  •  
    Coastal Flood Advisory December 4, 04:37am until December 7, 03:00pm
    Cold Weather Advisory December 4, 04:37am until December 4, 08:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. North wind around 6 mph.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48. West wind around 5 mph.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: Areas of fog between 10am and 11am. Otherwise, mostly sunny, with a high near 64. Light and variable wind.

    High: 64 °F

    Areas Fog
    then Sunny

  • Saturday Night

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

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Today
Sunny, with a high near 63. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 45. North wind around 6 mph.
Friday
Sunny, with a high near 64. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 48. West wind around 5 mph.
Saturday
Areas of fog between 10am and 11am. Otherwise, mostly sunny, with a high near 64. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 50.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.52°N 122.98°W (Elev. 95 ft)
Last Update:
2:09 am PST Dec 4, 2025
Forecast Valid:
4am PST Dec 4, 2025-6pm PST Dec 10, 2025
 
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