Fire Weather Concerns; Record Warmth Spreads

The Plains to the mid-Mississippi Valley continue with warm and dry conditions. Any fires that initiate could spread quickly. The warm temperatures will expand across the Southern Plains into the Southwest where numerous records are expected through the weekend. Meanwhile, a cold front will move southward across the northern Plains and Great Lakes region where some snow will develop this weekend. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Clear

61°F

16°C

Humidity 89%
Wind Speed NNW 4 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 27 Feb 08:53 PM PST
Extended Forecast for

Saint Helena CA

  • Tonight

    Tonight: Patchy fog between 1am and 4am.  Otherwise, mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am.  Otherwise, increasing clouds, with a high near 81. Light and variable wind.

    High: 81 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 66. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 66 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers.  Patchy fog after 10pm.  Otherwise, mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 68.

    High: 68 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

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

    Low: 46 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am.  Otherwise, sunny, with a high near 69.

    High: 69 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog between 1am and 4am. Otherwise, mostly cloudy, with a low around 57. Calm wind.
Saturday
Patchy fog before 8am. Otherwise, increasing clouds, with a high near 81. Light and variable wind.
Saturday Night
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 52. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 66. Calm wind becoming west southwest around 5 mph in the afternoon.
Sunday Night
A 20 percent chance of showers. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 48. Calm wind.
Monday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 68.
Monday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 46.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 69.
Tuesday Night
Mostly cloudy, with a low around 45.
Wednesday
A slight chance of showers after 10am. Mostly sunny, with a high near 68.
Wednesday Night
Clear, with a low around 44.
Thursday
Sunny, with a high near 69.
Thursday Night
Mostly clear, with a low around 48.
Friday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
3:04 pm PST Feb 27, 2026
9pm PST Feb 27, 2026-6pm PST Mar 6, 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