Areas of Excessive Rainfall and Severe Thunderstorms; Fire Weather Concerns in the Northern Plains and Four Corners Region

Widespread showers and thunderstorms may bring areas of flash flooding across much of the Southern Plains into the Gulf Coast region and the upper Ohio River Valley into the Mid-Atlantic. A large Pacific storm will bring widespread rain, gusty winds, and mountain snow to California and the Great Basin. Fire weather concerns expected in the Northern Plains and the Four Corners region. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

57°F

14°C

Humidity 62%
Wind Speed NW 12 MPH
Barometer 29.78 in (1008.47 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 26 May 09:10 PM PDT
Extended Forecast for

Guerneville CA

  • Tonight

    Tonight: Mostly clear, with a low around 48. West northwest wind 5 to 8 mph becoming calm  after midnight. Winds could gust as high as 21 mph.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 3am, then a slight chance of rain after 4am.  Mostly cloudy, with a low around 50. Calm wind.  Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Rain

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 11am.  Patchy fog before 7am.  Otherwise, mostly sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon.  New precipitation amounts of less than a tenth of an inch possible.

    High: 69 °F

    Chance Rain
    and Patchy
    Fog

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50. West southwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

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

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 48. West northwest wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Wednesday
Mostly sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night
A slight chance of rain before 3am, then a slight chance of rain after 4am. Mostly cloudy, with a low around 50. Calm wind. Chance of precipitation is 20%.
Thursday
A 30 percent chance of rain, mainly before 11am. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 69. Calm wind becoming southwest 5 to 7 mph in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 50. West southwest wind 5 to 7 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 50.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.5°N 122.98°W (Elev. 397 ft)
8:36 pm PDT May 26, 2026
9pm PDT May 26, 2026-6pm PDT Jun 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database