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.

Clear

46°F

8°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.53 in (1000.0 mb)
Dewpoint 45°F (7°C)
Visibility 8.00 mi
Last update 11 Oct 01:15 AM PDT
Extended Forecast for

Saint Helena CA

Coastal Flood Advisory October 11, 01:34am until October 14, 04:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory October 11, 01:34am until October 14, 04:00pm

    NOW until 4:00pm Wed

    Coastal Flood Advisory

  • Overnight

    Low: 44 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 74. Light and variable wind.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 44. Calm wind.
Sunday
Sunny, with a high near 74. Light and variable wind.
Sunday Night
Mostly clear, with a low around 43. Calm wind.
Columbus Day
Sunny, with a high near 71. Light and variable wind.
Monday Night
Mostly clear, with a low around 43. Calm wind.
Tuesday
Sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 52.
Saturday
Sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.49°N 122.45°W (Elev. 230 ft)
Last Update:
1:26 am PDT Oct 11, 2026
Forecast Valid:
1am PDT Oct 11, 2026-6pm PDT Oct 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation