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

Significant Severe Weather in the Upper Midwest; Blizzard Conditions in the Cascades; Heavy Rain and Thunderstorms in Hawaii

Significant severe thunderstorms, including the risk for strong to intense tornadoes, are expected across the Upper Midwest this afternoon and evening. An atmospheric river will bring blizzard conditions to the northern Cascades. A powerful Kona storm is expected to impact Hawaii today into Saturday, bringing heavy rainfall and strong winds. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

69°F

21°C

Humidity 37%
Wind Speed SE 10 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 10 Mar 04:53 PM PDT
Extended Forecast for

Guerneville CA

  • Tonight

    Tonight: Mostly clear, with a low around 45. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 74. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 74 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. Light north northwest wind.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49. North northwest wind 3 to 5 mph.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 45. Northwest wind 5 to 7 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 74. Calm wind becoming west southwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 48. Light north northwest wind.
Thursday
Sunny, with a high near 78. Calm wind becoming west northwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 49. North northwest wind 3 to 5 mph.
Friday
Partly sunny, with a high near 76.
Friday Night
Mostly cloudy, with a low around 50.
Saturday
Sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Mostly cloudy, with a low around 58.
Monday
Partly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 84.
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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:
1:26 pm PDT Mar 10, 2026
Forecast Valid:
5pm PDT Mar 10, 2026-6pm PDT Mar 17, 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation