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

Critical Fire Weather in the High Plains; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central and southern High Plains Wednesday. Two Pacific storms will continue impacting the mountains of the western U.S. into Thursday with gusty winds and heavy snow. Heavy snow and gusty winds will continue to impact the northern Plains into the central Great Lakes Wednesday. 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.

Partly Cloudy

38°F

3°C

Humidity 92%
Wind Speed WNW 5 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 17 Feb 09:53 PM PST
Extended Forecast for

Guerneville CA

Cold Weather Advisory February 18, 12:00am until February 18, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Rain likely, mainly after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 35. West northwest wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Chance Rain
    then Rain
    Likely and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of rain before 4pm, then a slight chance of rain after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 52. Calm wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Chance Rain
    and Patchy
    Fog

  • Wednesday Night

    Wednesday Night: Rain, mainly after 8pm. Steady temperature around 43. South southeast wind around 6 mph becoming northeast after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain

  • Thursday

    Thursday: Rain, mainly before 10am. High near 50. Northwest wind 7 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 50 °F

    Rain then
    Chance Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 10pm. Widespread frost, mainly after 4am. Otherwise, partly cloudy, with a low around 33. Northwest wind 6 to 8 mph.

    Low: 33 °F

    Chance Rain
    then Frost

  • Friday

    Friday: A 30 percent chance of rain after 10am. Widespread frost, mainly before 8am. Otherwise, partly sunny, with a high near 52. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Chance Rain

  • Friday Night

    Friday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely, mainly after 10am. Mostly cloudy, with a high near 53.

    High: 53 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Cloudy, with a low around 47.

    Low: 47 °F

    Rain

Detailed Forecast

Tonight
Rain likely, mainly after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 35. West northwest wind 3 to 6 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain before 4pm, then a slight chance of rain after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 52. Calm wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain, mainly after 8pm. Steady temperature around 43. South southeast wind around 6 mph becoming northeast after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain, mainly before 10am. High near 50. Northwest wind 7 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 30 percent chance of rain before 10pm. Widespread frost, mainly after 4am. Otherwise, partly cloudy, with a low around 33. Northwest wind 6 to 8 mph.
Friday
A 30 percent chance of rain after 10am. Widespread frost, mainly before 8am. Otherwise, partly sunny, with a high near 52. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 38.
Saturday
Rain likely, mainly after 10am. Mostly cloudy, with a high near 53.
Saturday Night
Rain. Cloudy, with a low around 47.
Sunday
Rain. Cloudy, with a high near 56.
Sunday Night
Rain. Cloudy, with a low around 50.
Monday
Rain. Cloudy, with a high near 58.
Monday Night
Rain. Cloudy, with a low around 48.
Tuesday
Rain. Cloudy, with a high near 59.
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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:
2:05 pm PST Feb 17, 2026
Forecast Valid:
10pm PST Feb 17, 2026-6pm PST Feb 24, 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