Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

Lat: 38.2075°NLon: 122.27944°WElev: 33.0ft.

Overcast

45°F

7°C

Humidity 93%
Wind Speed N 5 MPH
Barometer 30.28 in (1025.4 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 09 Dec 11:35 AM PST
Extended Forecast for

Sonoma CA

  • Today

    Today: Patchy fog before noon.  Otherwise, sunny, with a high near 51. Calm wind.

    High: 51 °F

    Patchy Fog

  • Tonight

    Tonight: Patchy dense fog.  Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Patchy Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before noon.  Otherwise, mostly sunny, with a high near 62. Calm wind.

    High: 62 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 9pm.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 11am.  Otherwise, mostly sunny, with a high near 65. Light east wind.

    High: 65 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog before 1am, then patchy fog after 5am.  Otherwise, mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am.  Otherwise, mostly sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog before 4am, then patchy fog after 5am.  Otherwise, mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 61.

    High: 61 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Today
Patchy fog before noon. Otherwise, sunny, with a high near 51. Calm wind.
Tonight
Patchy dense fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
Wednesday
Areas of dense fog before noon. Otherwise, mostly sunny, with a high near 62. Calm wind.
Wednesday Night
Patchy fog after 9pm. Otherwise, mostly clear, with a low around 42. Calm wind.
Thursday
Areas of fog before 11am. Otherwise, mostly sunny, with a high near 65. Light east wind.
Thursday Night
Patchy fog before 1am, then patchy fog after 5am. Otherwise, mostly clear, with a low around 41.
Friday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 62.
Friday Night
Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly clear, with a low around 40.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 61.
Saturday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 41.
Sunday
Areas of fog. Otherwise, partly sunny, with a high near 60.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 43.
Monday
A slight chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Sonoma CA
 38.29°N 122.46°W (Elev. 72 ft)
9:23 am PST Dec 9, 2025
11am PST Dec 9, 2025-6pm PST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database