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

Atmospheric River to Impact the Northwest; Windy Conditions in the Northeast

A strong atmospheric river moving into northern California later today will bring a threat for moderate to heavy rainfall and flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. through Wednesday. Gusty winds and isolated showers are expected today in the Northeast U.S. behind a cold front. Wind Advisories have been issued. Read More >

Hazardous Weather Conditions

Current conditions at

KF6YUA Sebastopol (AR323)

Lat: 38.3803°NLon: 122.8242°WElev: 230.0ft.

NA

68°F

20°C

Humidity 74%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 59°F (15°C)
Visibility NA
Last update 04 Nov 11:52 AM PST
Extended Forecast for

6 Miles SSW Saint Helena CA

Wind Advisory November 4, 10:00pm until November 5, 04:00pm
Click here for hazard details and duration
Wind Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 60. South southwest wind around 7 mph, with gusts as high as 20 mph.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: Showers after 10pm. Steady temperature around 57. South wind 9 to 16 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 59. South wind 10 to 18 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 59 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 54. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 60. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 10 percent chance of showers after 4am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before 10am. Partly sunny, with a high near 61.

    High: 61 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 60. South southwest wind around 7 mph, with gusts as high as 20 mph.
Tonight
Showers after 10pm. Steady temperature around 57. South wind 9 to 16 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Showers and possibly a thunderstorm. High near 59. South wind 10 to 18 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 54. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 60. Calm wind becoming west southwest around 5 mph in the afternoon.
Thursday Night
A 10 percent chance of showers after 4am. Mostly cloudy, with a low around 53.
Friday
A 20 percent chance of showers before 10am. Partly sunny, with a high near 61.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
A slight chance of showers. Partly sunny, with a high near 64.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 54.
Monday
A slight chance of showers. Partly sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSW Saint Helena CA
 38.42°N 122.49°W (Elev. 1627 ft)
Last Update:
2:10 am PST Nov 4, 2025
Forecast Valid:
12pm PST Nov 4, 2025-6pm PST Nov 10, 2025
 
Forecast Discussion
 
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Additional Resources

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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