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

Fire Weather Issues; Pacific System Moving Inland

Dry fuels, strong winds and dry weather will continue to bring elevated to critical fire weather conditions to the areas of the Plains, Midwest and Southeast today. A Pacific storm system will bring low elevation rain and heavy high elevation mountain snow to California through early week, expanding into the Pacific Northwest, Great Basin, and southern California on Tuesday. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

rain,mist

57°F

14°C

Humidity 96%
Wind Speed SSW 5 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 56°F (13°C)
Visibility 2.00 mi
Last update 20 Apr 02:53 PM PDT
Extended Forecast for

Guerneville CA

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm before 5pm, then rain and possibly a thunderstorm after 5pm. High near 60. Southwest wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Showers

  • Tonight

    Tonight: Rain. Patchy fog before midnight, then patchy fog after 1am. Low around 49. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain and
    Patchy Fog

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm before 3pm, then showers and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before 8am. High near 60. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 45. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Rain Likely
    then Chance
    Rain and
    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of rain before 11am. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 64 °F

    Chance Rain
    and Patchy
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm before 5pm, then rain and possibly a thunderstorm after 5pm. High near 60. Southwest wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain. Patchy fog before midnight, then patchy fog after 1am. Low around 49. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Rain and possibly a thunderstorm before 3pm, then showers and possibly a thunderstorm between 3pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before 8am. High near 60. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Rain likely, mainly before 11pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 45. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 30 percent chance of rain before 11am. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 64. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Partly sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 48.
Monday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.5°N 122.98°W (Elev. 397 ft)
Last Update:
1:26 pm PDT Apr 20, 2026
Forecast Valid:
3pm PDT Apr 20, 2026-6pm PDT Apr 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