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

Heavy Rainfall Threat for Portions of Mid-Atlantic and Northeast; Heat Linger for Southeast and Expands for the West

Moisture and nearby frontal boundary will focus more showers and thunderstorms for portions of the Mid-Atlantic and Northeast today. Rainfall could be locally heavy resulting instances of flash flooding. Meanwhile, the heat lingers for areas of the Southeast and expands across the Western U.S. the next several days. Between these areas, severe thunderstorms possible for the Plains and Midwest. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Mist

54°F

12°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 52°F (11°C)
Visibility 4.00 mi
Last update 06 Jul 08:35 AM PDT
Extended Forecast for

Saint Helena CA

  • Today

    Today: Sunny, with a high near 82. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Patchy fog between 2am and 5am. Otherwise, increasing clouds, with a low around 51. West southwest wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 52. West southwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Sunny, with a high near 88. Light and variable wind.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. Calm wind becoming west southwest around 5 mph in the afternoon.
Tonight
Patchy fog between 2am and 5am. Otherwise, increasing clouds, with a low around 51. West southwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog between 7am and 8am. Otherwise, sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Patchy fog after 3am. Otherwise, mostly clear, with a low around 52. West southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 88. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 59.
Saturday
Mostly sunny, with a high near 91.
Saturday Night
Mostly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.49°N 122.48°W (Elev. 318 ft)
Last Update:
2:41 am PDT Jul 6, 2026
Forecast Valid:
8am PDT Jul 6, 2026-6pm PDT Jul 12, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation