Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Mist

48°F

9°C

Humidity 100%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 48°F (9°C)
Visibility 1.25 mi
Last update 14 Nov 09:20 PM PST
Extended Forecast for

Saint Helena CA

  • Tonight

    Tonight: Patchy fog.  Otherwise, partly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Patchy Fog

  • Saturday

    Saturday: A 30 percent chance of showers after 4pm.  Mostly cloudy, with a high near 68. Calm wind.  New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers, mainly after 10pm.  Low around 50. Calm wind.  Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Showers

  • Sunday

    Sunday: Showers.  High near 59. South wind 3 to 6 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: Showers.  Low around 48. South southeast wind 6 to 8 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 48 °F

    Showers

  • Monday

    Monday: Showers likely, mainly before 4pm.  Mostly cloudy, with a high near 58. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 20 percent chance of showers before 10pm.  Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    Showers then
    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 7am.  Otherwise, sunny, with a high near 63.

    High: 63 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after midnight.  Otherwise, partly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Clear
    then Patchy
    Fog

Detailed Forecast

Tonight
Patchy fog. Otherwise, partly cloudy, with a low around 47. Calm wind.
Saturday
A 30 percent chance of showers after 4pm. Mostly cloudy, with a high near 68. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers, mainly after 10pm. Low around 50. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers. High near 59. South wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers. Low around 48. South southeast wind 6 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Showers likely, mainly before 4pm. Mostly cloudy, with a high near 58. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 20 percent chance of showers before 10pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 43.
Tuesday
Patchy fog before 7am. Otherwise, sunny, with a high near 63.
Tuesday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 43.
Wednesday
A slight chance of showers after 10am. Partly sunny, with a high near 62.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46.
Thursday
A chance of showers. Mostly cloudy, with a high near 59.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.51°N 122.46°W (Elev. 203 ft)
8:05 pm PST Nov 14, 2025
9pm PST Nov 14, 2025-6pm PST Nov 21, 2025
 
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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