Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

Current conditions at

KF6YUA Sebastopol (AR323)

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

NA

51°F

11°C

Humidity 87%
Wind Speed ENE 0 MPH
Barometer 30.32 in (1026.75 mb)
Dewpoint 47°F (8°C)
Visibility NA
Last update 07 Dec 03:10 PM PST
Extended Forecast for

8 Miles SW Saint Helena CA

  • Tonight

    Tonight: Patchy dense fog.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Dense
    Fog

  • Monday

    Monday: Areas of dense fog before 10am.  Otherwise, sunny, with a high near 62. Calm wind.

    High: 62 °F

    Areas Dense
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog.  Otherwise, partly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am.  Otherwise, sunny, with a high near 63. Calm wind.

    High: 63 °F

    Areas Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 11pm and 3am.  Otherwise, partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am.  Otherwise, sunny, with a high near 66.

    High: 66 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy dense fog. Otherwise, mostly clear, with a low around 42. Calm wind.
Monday
Areas of dense fog before 10am. Otherwise, sunny, with a high near 62. Calm wind.
Monday Night
Patchy fog. Otherwise, partly cloudy, with a low around 43. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, sunny, with a high near 63. Calm wind.
Tuesday Night
Patchy fog between 11pm and 3am. Otherwise, partly cloudy, with a low around 46. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 44.
Saturday
Sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 44.
Sunday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SW Saint Helena CA
 38.41°N 122.55°W (Elev. 492 ft)
12:41 pm PST Dec 7, 2025
3pm PST Dec 7, 2025-6pm PST Dec 14, 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