Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mist

45°F

7°C

Humidity 93%
Wind Speed E 10 MPH
Barometer 30.23 in (1023.71 mb)
Dewpoint 43°F (6°C)
Visibility 6.00 mi
Wind Chill40°F (4°C)
Last update 09 Dec 11:20 PM PST
Extended Forecast for

5 Miles W Napa Co. Airport CA

  • Tonight

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

    Low: 40 °F

    Areas Dense
    Fog

  • Wednesday

    Wednesday: Areas of dense fog before 10am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 59. Light east southeast wind.

    High: 59 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

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

    Low: 42 °F

    Patchy Fog

  • Thursday

    Thursday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 63. Calm wind becoming east around 5 mph in the afternoon.

    High: 63 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog.  Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Patchy Fog

  • Friday

    Friday: Areas of fog before 7am.  Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Patchy fog after 10pm.  Otherwise, mostly clear, with a low around 41.

    Low: 41 °F

    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 10am.  Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 42.

    Low: 42 °F

    Patchy Fog

Detailed Forecast

Tonight
Areas of dense fog. Otherwise, partly cloudy, with a low around 40. Calm wind.
Wednesday
Areas of dense fog before 10am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 59. Light east southeast wind.
Wednesday Night
Patchy fog. Otherwise, mostly clear, with a low around 42. Calm wind.
Thursday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 63. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Patchy fog. Otherwise, mostly clear, with a low around 42. Calm wind.
Friday
Areas of fog before 7am. Otherwise, mostly sunny, with a high near 60.
Friday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 41.
Saturday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 59.
Saturday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 42.
Sunday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 59.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 44.
Monday
A slight chance of rain. Areas of fog. Otherwise, mostly cloudy, with a high near 59.
Monday Night
A chance of rain. Patchy fog. Otherwise, mostly cloudy, with a low around 48.
Tuesday
A chance of rain. Areas of fog. Otherwise, partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Napa Co. Airport CA
 38.21°N 122.38°W (Elev. 3 ft)
12:26 pm PST Dec 9, 2025
11pm PST Dec 9, 2025-6pm PST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database