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

Tracking Weekend Storm Impacts

A storm and trailing cold front will continue to slowly move through the Gulf Coast and Southeast U.S. through this weekend with widespread rain showers and isolated thunderstorms. A fast-moving clipper storm may bring several inches of snow to the north-central Plains, Midwest, eastern Great Lakes, and Northeast regions this weekend. 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

44°F

7°C

Humidity 95%
Wind Speed ESE 3 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 43°F (6°C)
Visibility 0.50 mi
Last update 07 Dec 12:53 AM PST
Extended Forecast for

Saint Helena CA

Coastal Flood Advisory December 7, 01:06am until December 7, 03:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory December 7, 01:06am until December 7, 03:00pm

    NOW until 3:00pm Sun

    Coastal Flood Advisory

  • Overnight

    Low: 42 °F

    Areas Dense
    Fog

  • Sunday

    Sunday: Areas of dense fog before 10am. Otherwise, mostly sunny, with a high near 60. Calm wind.

    High: 60 °F

    Areas Dense
    Fog then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Areas of fog between 9pm and 4am. Otherwise, partly cloudy, with a low around 41. Light and variable wind.

    Low: 41 °F

    Areas Fog

  • Monday

    Monday: Patchy fog between 7am and 11am. Otherwise, mostly sunny, with a high near 65. Light and variable wind.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 66.

    High: 66 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Areas of fog. Otherwise, mostly cloudy, with a low around 46.

    Low: 46 °F

    Areas Fog

  • Wednesday

    Wednesday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 69.

    High: 69 °F

    Areas Fog
    then Sunny

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, mostly cloudy, with a low around 42. Calm wind.
Sunday
Areas of dense fog before 10am. Otherwise, mostly sunny, with a high near 60. Calm wind.
Sunday Night
Areas of fog between 9pm and 4am. Otherwise, partly cloudy, with a low around 41. Light and variable wind.
Monday
Patchy fog between 7am and 11am. Otherwise, mostly sunny, with a high near 65. Light and variable wind.
Monday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 43. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 66.
Tuesday Night
Areas of fog. Otherwise, mostly cloudy, with a low around 46.
Wednesday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 69.
Wednesday Night
Patchy fog. Otherwise, partly cloudy, with a low around 46.
Thursday
Areas of fog before 9am. Otherwise, sunny, with a high near 70.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 45.
Friday
Areas of fog. Otherwise, sunny, with a high near 69.
Friday Night
Patchy fog. Otherwise, mostly clear, with a low around 43.
Saturday
Patchy fog. Otherwise, mostly sunny, with a high near 67.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.49°N 122.45°W (Elev. 230 ft)
Last Update:
12:26 am PST Dec 7, 2025
Forecast Valid:
1am PST Dec 7, 2025-6pm PST Dec 13, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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