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Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. 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.

Overcast

58°F

14°C

Humidity 90%
Wind Speed SW 6 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Jun 10:53 PM PDT
Extended Forecast for

Guerneville CA

Coastal Flood Advisory June 17, 11:04pm until June 18, 05:00am
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory June 17, 11:04pm until June 18, 05:00am

    NOW until 5:00am Thu

    Coastal Flood Advisory

  • Tonight

    Low: 54 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 73 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 55. South southwest wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Cloudy

  • Juneteenth

    Juneteenth: Cloudy through mid morning, then gradual clearing, with a high near 70. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 70 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Patchy fog between midnight and 2am. Otherwise, partly cloudy, with a low around 53. South southwest wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after midnight. Otherwise, mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Sunday

    Sunday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Tonight
Patchy fog before 1am. Otherwise, mostly cloudy, with a low around 54. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 73. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 55. South southwest wind around 5 mph becoming calm in the evening.
Juneteenth
Cloudy through mid morning, then gradual clearing, with a high near 70. Calm wind becoming south 5 to 7 mph in the afternoon.
Friday Night
Patchy fog between midnight and 2am. Otherwise, partly cloudy, with a low around 53. South southwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 52.
Sunday
Sunny, with a high near 81.
Sunday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 53.
Monday
Sunny, with a high near 80.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 52.
Tuesday
Patchy fog. Otherwise, mostly sunny, with a high near 81.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guerneville CA
 38.52°N 122.98°W (Elev. 95 ft)
Last Update:
2:05 pm PDT Jun 17, 2026
Forecast Valid:
11pm PDT Jun 17, 2026-6pm PDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation