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

Tracking Areas of Fire Weather, Winter Weather, and Severe Weather Thursday

Continuation of gusty winds and low relative humidity will bring additional periods of critical fire weather to the southern Plains Thursday and Friday. Another Pacific storm will continue gusty winds and heavy snow over the western mountains into Thursday. Severe thunderstorms are possible across parts of the middle Mississippi into lower Ohio Valleys Thursday afternoon into early evening. 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.

Rain

43°F

6°C

Humidity 92%
Wind Speed WNW 8 MPH
Barometer 29.7 in (1005.76 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 19 Feb 07:53 AM PST
Extended Forecast for

Guerneville CA

Extreme Cold Warning February 20, 01:00am until February 20, 09:00am
Click here for hazard details and duration
Extreme Cold Warning

  • Today

    Today: A slight chance of rain between 9am and 11am. Mostly sunny, with a high near 50. Northwest wind 8 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Slight Chance
    Rain then
    Sunny

  • Tonight

    Tonight: Patchy frost after 1am. Otherwise, mostly clear, with a low around 34. West northwest wind 3 to 7 mph. Winds could gust as high as 18 mph.

    Low: 34 °F

    Clear then
    Patchy Frost

  • Friday

    Friday: Areas of frost before 9am. Otherwise, partly sunny, with a high near 52. Light and variable wind.

    High: 52 °F

    Areas Frost
    then Partly
    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Slight Chance
    Rain

  • Saturday

    Saturday: A 40 percent chance of rain. Mostly cloudy, with a high near 53. Southeast wind 5 to 10 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Rain. Low around 47. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 47 °F

    Rain

  • Sunday

    Sunday: Rain. High near 57. Chance of precipitation is 80%.

    High: 57 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Cloudy, with a low around 51.

    Low: 51 °F

    Rain

  • Monday

    Monday: Rain. Cloudy, with a high near 59.

    High: 59 °F

    Rain

Detailed Forecast

Today
A slight chance of rain between 9am and 11am. Mostly sunny, with a high near 50. Northwest wind 8 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Patchy frost after 1am. Otherwise, mostly clear, with a low around 34. West northwest wind 3 to 7 mph. Winds could gust as high as 18 mph.
Friday
Areas of frost before 9am. Otherwise, partly sunny, with a high near 52. Light and variable wind.
Friday Night
A 20 percent chance of rain after 10pm. Mostly cloudy, with a low around 38. Calm wind.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 53. Southeast wind 5 to 10 mph, with gusts as high as 24 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain. Low around 47. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain. High near 57. Chance of precipitation is 80%.
Sunday Night
Rain. Cloudy, with a low around 51.
Monday
Rain. Cloudy, with a high near 59.
Monday Night
Rain. Cloudy, with a low around 52.
Tuesday
Rain. Cloudy, with a high near 58.
Tuesday Night
Rain. Mostly cloudy, with a low around 49.
Wednesday
Rain likely. Mostly cloudy, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.5°N 122.98°W (Elev. 397 ft)
Last Update:
1:27 am PST Feb 19, 2026
Forecast Valid:
8am PST Feb 19, 2026-6pm PST Feb 25, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation