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

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Mist

46°F

8°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 46°F (8°C)
Visibility 2.00 mi
Last update 23 Nov 05:15 AM PST
Extended Forecast for

Saint Helena CA

  • Today

    Today: Areas of fog before 10am. Otherwise, sunny, with a high near 64. Calm wind.

    High: 64 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: Patchy fog before 3am, then areas of fog after 5am. Otherwise, partly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Partly Cloudy
    then Areas
    Fog

  • Monday

    Monday: Patchy dense fog before 10am. Otherwise, sunny, with a high near 66. Calm wind.

    High: 66 °F

    Patchy Dense
    Fog then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. North wind 3 to 5 mph.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 66. Calm wind.

    High: 66 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thanksgiving Day

    Thanksgiving Day: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Areas of fog before 10am. Otherwise, sunny, with a high near 64. Calm wind.
Tonight
Patchy fog before 3am, then areas of fog after 5am. Otherwise, partly cloudy, with a low around 43. Light and variable wind.
Monday
Patchy dense fog before 10am. Otherwise, sunny, with a high near 66. Calm wind.
Monday Night
Mostly clear, with a low around 42. North wind 3 to 5 mph.
Tuesday
Sunny, with a high near 66. Calm wind.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 66.
Wednesday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 43.
Thanksgiving Day
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 66.
Thursday Night
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 44.
Friday
Areas of fog. Otherwise, mostly sunny, with a high near 64.
Friday Night
A slight chance of rain. Mostly cloudy, with a low around 44.
Saturday
A slight chance of rain. Partly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
Last Update:
12:31 am PST Nov 23, 2025
Forecast Valid:
5am PST Nov 23, 2025-6pm PST Nov 29, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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