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

Hazardous Weather Conditions

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

Lat: 38.5°NLon: 122.81667°WElev: 125.0ft.

Fog

46°F

8°C

Humidity 100%
Wind Speed NNW 4 MPH
Barometer 30.26 in (1024.72 mb)
Dewpoint 46°F (8°C)
Visibility 0.50 mi
Wind Chill44°F (7°C)
Last update 26 Nov 01:00 AM PST
Extended Forecast for

Saint Helena CA

Dense Fog Advisory November 26, 01:24am until November 26, 11:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory November 26, 01:24am until November 26, 11:00am

    NOW until 11:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 41 °F

    Dense Fog

  • Wednesday

    Wednesday: Widespread dense fog, mainly before 7am. Otherwise, sunny, with a high near 68. Calm wind.

    High: 68 °F

    Dense Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy dense fog between 10pm and 11pm. Otherwise, increasing clouds, with a low around 44. Light north northwest wind.

    Low: 44 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 68. Calm wind.

    High: 68 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Patchy dense fog. Otherwise, partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Dense
    Fog

  • Friday

    Friday: Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 65.

    High: 65 °F

    Areas Dense
    Fog then
    Sunny

  • Friday Night

    Friday Night: Areas of dense fog. Otherwise, mostly cloudy, with a low around 42.

    Low: 42 °F

    Areas Dense
    Fog

  • Saturday

    Saturday: Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 63.

    High: 63 °F

    Patchy Dense
    Fog then
    Mostly Sunny

Detailed Forecast

Overnight
Widespread dense fog, mainly before 5am. Otherwise, mostly cloudy, with a low around 41. Light north wind.
Wednesday
Widespread dense fog, mainly before 7am. Otherwise, sunny, with a high near 68. Calm wind.
Wednesday Night
Patchy dense fog between 10pm and 11pm. Otherwise, increasing clouds, with a low around 44. Light north northwest wind.
Thanksgiving Day
Mostly sunny, with a high near 68. Calm wind.
Thursday Night
Patchy dense fog. Otherwise, partly cloudy, with a low around 43. Calm wind.
Friday
Areas of dense fog before 11am. Otherwise, mostly sunny, with a high near 65.
Friday Night
Areas of dense fog. Otherwise, mostly cloudy, with a low around 42.
Saturday
Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 63.
Saturday Night
Patchy dense fog after 9pm. Otherwise, partly cloudy, with a low around 41.
Sunday
Areas of dense fog before 8am. Otherwise, mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Sunny, with a high near 65.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Patchy dense fog. Otherwise, mostly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.49°N 122.45°W (Elev. 230 ft)
Last Update:
1:10 am PST Nov 26, 2025
Forecast Valid:
1am PST Nov 26, 2025-6pm PST Dec 2, 2025
 
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