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

Fire Weather Concerns for the Plains; Thunderstorms in the Southeast; Record Warmth Spreads in the Southwest

Elevated to locally critical conditions will persist across the High Plains. Showers and scattered thunderstorms are expected over parts of the Southeast and Florida Peninsula. Clipper system will bring modest snowfall and strong winds from the Northern High Plains into the Upper Midwest this weekend. Record warmth will persist across the Southwest into the southern Plains. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

63°F

17°C

Humidity 77%
Wind Speed SSE 3 MPH
Barometer 30.2 in (1022.69 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 26 Feb 06:53 PM PST
Extended Forecast for

Saint Helena CA

  • Tonight

    Tonight: Partly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77. Calm wind.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 75. Calm wind.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 67.

    High: 67 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of rain. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Monday

    Monday: A slight chance of rain. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 67.

    High: 67 °F

    Slight Chance
    Rain and
    Areas Fog

  • Monday Night

    Monday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 46.

    Low: 46 °F

    Patchy Fog

Detailed Forecast

Tonight
Partly cloudy, with a low around 52. Calm wind.
Friday
Mostly sunny, with a high near 77. Calm wind.
Friday Night
Mostly cloudy, with a low around 56. Calm wind.
Saturday
Partly sunny, with a high near 75. Calm wind.
Saturday Night
Patchy fog after 1am. Otherwise, cloudy, with a low around 52. Calm wind.
Sunday
Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 67.
Sunday Night
A 20 percent chance of rain. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 46.
Monday
A slight chance of rain. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 67.
Monday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 46.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 68.
Tuesday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 45.
Wednesday
A slight chance of rain. Patchy fog. Otherwise, mostly sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
Last Update:
12:26 pm PST Feb 26, 2026
Forecast Valid:
7pm PST Feb 26, 2026-6pm PST Mar 5, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation