Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

73°F

23°C

Humidity 40%
Wind Speed WSW 13 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 04 Sep 04:00 PM PDT
Extended Forecast for

Saint Helena CA

Coastal Flood Advisory until September 4, 09:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  •  
    Coastal Flood Advisory until September 4, 09:00pm

    NOW until 9:00pm Fri

    Coastal Flood Advisory

  • This Afternoon

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 11pm.  Otherwise, mostly clear, with a low around 48. Light and variable wind.

    Low: 48 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 9am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 79. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 79 °F

    Areas Fog
    then Sunny

  • Saturday Night

    Saturday Night: Areas of fog after midnight.  Otherwise, increasing clouds, with a low around 49. Light and variable wind.

    Low: 49 °F

    Mostly Clear
    then Areas
    Fog

  • Sunday

    Sunday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 78 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after midnight.  Otherwise, mostly clear, with a low around 50.

    Low: 50 °F

    Clear then
    Patchy Fog

  • Labor Day

    Labor Day: Patchy fog before 8am.  Otherwise, sunny, with a high near 86.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 74. West southwest wind around 5 mph.
Tonight
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 48. Light and variable wind.
Saturday
Areas of fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 79. Calm wind becoming west southwest around 5 mph in the afternoon.
Saturday Night
Areas of fog after midnight. Otherwise, increasing clouds, with a low around 49. Light and variable wind.
Sunday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Sunday Night
Patchy fog after midnight. Otherwise, mostly clear, with a low around 50.
Labor Day
Patchy fog before 8am. Otherwise, sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
A slight chance of rain after 11pm. Partly cloudy, with a low around 55.
Wednesday
A slight chance of rain. Partly sunny, with a high near 83.
Wednesday Night
A slight chance of rain. Mostly cloudy, with a low around 57.
Thursday
A slight chance of rain. Partly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 55.
Friday
Partly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
1:26 pm PDT Sep 4, 2026
4pm PDT Sep 4, 2026-6pm PDT Sep 11, 2026
 
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Additional Resources

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