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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

68°F

20°C

Humidity 64%
Wind Speed E 3 MPH
Barometer 30.05 in (1017.61 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 Aug 11:35 AM PDT
Extended Forecast for

Guerneville CA

  • Today

    Today: Cloudy early, then gradual clearing, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 78 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 53. Light west wind.

    Low: 53 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54. West wind 5 to 7 mph becoming calm after midnight.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 53.

    Low: 53 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 11am. Otherwise, mostly sunny, with a high near 77.

    High: 77 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Patchy fog after 8pm. Otherwise, partly cloudy, with a low around 52.

    Low: 52 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, partly sunny, with a high near 78.

    High: 78 °F

    Areas Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Cloudy early, then gradual clearing, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 53. Light west wind.
Saturday
Sunny, with a high near 86. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 54. West wind 5 to 7 mph becoming calm after midnight.
Sunday
Patchy fog before 9am. Otherwise, sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 53.
Monday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 77.
Monday Night
Patchy fog after 8pm. Otherwise, partly cloudy, with a low around 52.
Tuesday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 78.
Tuesday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 53.
Wednesday
Patchy fog. Otherwise, mostly sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Mostly sunny, with a high near 84.
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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:
11:27 am PDT Aug 21, 2026
Forecast Valid:
11am PDT Aug 21, 2026-6pm PDT Aug 27, 2026
 
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Additional Resources

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