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

Atmospheric River Continues to Impact the Northwest U.S.; Gusty to High Winds in the Northeast U.S.

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. Wednesday into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Hazardous Weather Conditions

Current conditions at

Santa Rosa, Santa Rosa Sonoma County Airport (KSTS)

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

Overcast

62°F

17°C

Humidity 72%
Wind Speed SSE 8 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 04 Nov 05:53 PM PST
Extended Forecast for

Saint Helena CA

Coastal Flood Advisory November 4, 06:08pm until November 8, 02:00pm
Wind Advisory November 4, 10:00pm until November 5, 04:00pm
Click here for hazard details and duration
Coastal Flood Advisory
Wind Advisory
  •  
    Coastal Flood Advisory November 4, 06:08pm until November 8, 02:00pm

    NOW until 2:00pm Sat

    Coastal Flood Advisory

  • Tonight

    Low: 55 °F

    Heavy Rain
    and Breezy

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 62. Breezy, with a south southwest wind 14 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 62 °F

    Heavy Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Rain likely, mainly before 10pm. Mostly cloudy, with a low around 54. South southwest wind around 5 mph becoming calm. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Rain Likely
    then Chance
    Rain

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 66. Light and variable wind.

    High: 66 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly between 10pm and 4am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 54. West southwest wind 5 to 9 mph becoming calm after midnight. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance Rain
    and Patchy
    Fog

  • Friday

    Friday: A 20 percent chance of rain before 10am. Areas of fog before 10am. Otherwise, partly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Rain and
    Areas Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73.

    High: 73 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Tonight
Rain between 10pm and 4am, then showers and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Low around 55. Breezy, with a south wind 5 to 10 mph increasing to 18 to 23 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Rain and possibly a thunderstorm before 10am, then showers and possibly a thunderstorm between 10am and 4pm, then rain likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 62. Breezy, with a south southwest wind 14 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Rain likely, mainly before 10pm. Mostly cloudy, with a low around 54. South southwest wind around 5 mph becoming calm. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 66. Light and variable wind.
Thursday Night
A 30 percent chance of rain, mainly between 10pm and 4am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 54. West southwest wind 5 to 9 mph becoming calm after midnight. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain before 10am. Areas of fog before 10am. Otherwise, partly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 73.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Mostly cloudy, with a low around 53.
Monday
Partly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 53.
Veterans Day
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Helena CA
 38.49°N 122.48°W (Elev. 318 ft)
Last Update:
2:27 pm PST Nov 4, 2025
Forecast Valid:
6pm PST Nov 4, 2025-6pm PST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

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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