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Critical Fire Weather in the Southern High Plains; Heavy Snow in the Great Lakes and Northeast U.S.

Gusty winds and low relative humidity will bring elevated to critical fire weather conditions to the southern High Plains through the weekend. A winter storm will track across the Great Lakes and Northeast U.S. into Saturday with areas of wintry mix and heavy snow from northern New York through southern Maine. 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.

Clear

54°F

12°C

Humidity 46%
Wind Speed SSE 8 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 20 Feb 05:00 PM PST
Extended Forecast for

Guerneville CA

Cold Weather Advisory February 21, 01:00am until February 21, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: A slight chance of rain between 4am and 5am. Increasing clouds, with a low around 38. Light and variable wind. Chance of precipitation is 10%.

    Low: 38 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Saturday

    Saturday: A 30 percent chance of rain, mainly between 1pm and 5pm. Mostly cloudy, with a high near 55. East southeast wind 6 to 10 mph, with gusts as high as 28 mph.

    High: 55 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain, mainly after 10pm. Low around 48. South southeast wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 48 °F

    Rain

  • Sunday

    Sunday: Rain. High near 59. South southeast wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Rain

  • Sunday Night

    Sunday Night: A 50 percent chance of rain, mainly before 4am. Patchy fog after 4am. Otherwise, cloudy, with a low around 50. South southeast wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Chance Rain
    and Patchy
    Fog

  • Monday

    Monday: Rain likely, mainly after 4pm. Patchy dense fog before 10am. Otherwise, mostly cloudy, with a high near 63. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance Rain
    and Patchy
    Dense Fog
    then Rain
    Likely

  • Monday Night

    Monday Night: Rain. The rain could be heavy at times. Low around 54. Chance of precipitation is 90%.

    Low: 54 °F

    Heavy Rain

  • Tuesday

    Tuesday: Rain. The rain could be heavy at times. Cloudy, with a high near 60.

    High: 60 °F

    Heavy Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 10pm. Patchy fog after 10pm. Otherwise, cloudy, with a low around 50.

    Low: 50 °F

    Rain Likely
    and Patchy
    Fog

Detailed Forecast

Tonight
A slight chance of rain between 4am and 5am. Increasing clouds, with a low around 38. Light and variable wind. Chance of precipitation is 10%.
Saturday
A 30 percent chance of rain, mainly between 1pm and 5pm. Mostly cloudy, with a high near 55. East southeast wind 6 to 10 mph, with gusts as high as 28 mph.
Saturday Night
Rain, mainly after 10pm. Low around 48. South southeast wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain. High near 59. South southeast wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 50 percent chance of rain, mainly before 4am. Patchy fog after 4am. Otherwise, cloudy, with a low around 50. South southeast wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain likely, mainly after 4pm. Patchy dense fog before 10am. Otherwise, mostly cloudy, with a high near 63. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Rain. The rain could be heavy at times. Low around 54. Chance of precipitation is 90%.
Tuesday
Rain. The rain could be heavy at times. Cloudy, with a high near 60.
Tuesday Night
Rain likely, mainly before 10pm. Patchy fog after 10pm. Otherwise, cloudy, with a low around 50.
Wednesday
A chance of rain. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 63.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 50.
Thursday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 66.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 50.
Friday
A slight chance of rain. Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.52°N 122.98°W (Elev. 95 ft)
Last Update:
2:25 pm PST Feb 20, 2026
Forecast Valid:
5pm PST Feb 20, 2026-6pm PST Feb 27, 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