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

Remnants of Arthur and Heavy Rainfall Across the South; Fire Weather Threat in the West

Life-threatening, potentially catastrophic flash flooding expected along the central Gulf Coast as the remnants of Arthur track across the area. Isolated brief tornadoes and damaging gusts remain possible overnight in the Southeast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts of the West Friday. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Overcast

61°F

16°C

Humidity 77%
Wind Speed SSW 5 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Jun 09:35 PM PDT
Extended Forecast for

Guerneville CA

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south southwest 5 to 7 mph in the afternoon.

    High: 70 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Increasing clouds, with a low around 53. South southwest wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 73 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 52. West southwest wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, sunny, with a high near 82.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 53.

    Low: 53 °F

    Clear then
    Patchy Fog

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 53.

    Low: 53 °F

    Patchy Fog

Detailed Forecast

Tonight
Mostly cloudy, with a low around 55. Calm wind.
Juneteenth
Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 53. South southwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 52. West southwest wind around 6 mph becoming calm in the evening.
Sunday
Patchy fog before 8am. Otherwise, sunny, with a high near 82.
Sunday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 53.
Monday
Sunny, with a high near 81.
Monday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 53.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 80.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 53.
Wednesday
Patchy fog. Otherwise, sunny, with a high near 82.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 54.
Thursday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.52°N 122.98°W (Elev. 95 ft)
Last Update:
1:26 pm PDT Jun 18, 2026
Forecast Valid:
9pm PDT Jun 18, 2026-6pm PDT Jun 25, 2026
 
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Additional Resources

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