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.

Partly Cloudy

46°F

8°C

Humidity 87%
Wind Speed E 13 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 09 Dec 04:00 PM PST
Extended Forecast for

2 Miles SE Lake Berryessa CA

  • Tonight

    Tonight: Mostly clear, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Areas of dense fog between 9am and 11am.  Otherwise, sunny, with a high near 63. Calm wind.

    High: 63 °F

    Areas Dense
    Fog then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy fog between 9am and 11am.  Otherwise, sunny, with a high near 65. Calm wind.

    High: 65 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Clear

  • Friday

    Friday: Patchy fog between 10am and 11am.  Otherwise, sunny, with a high near 62.

    High: 62 °F

    Patchy Fog
    then Sunny

  • Friday Night

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

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 48. Calm wind.
Wednesday
Areas of dense fog between 9am and 11am. Otherwise, sunny, with a high near 63. Calm wind.
Wednesday Night
Mostly clear, with a low around 50. Calm wind.
Thursday
Patchy fog between 9am and 11am. Otherwise, sunny, with a high near 65. Calm wind.
Thursday Night
Mostly clear, with a low around 48. Calm wind.
Friday
Patchy fog between 10am and 11am. Otherwise, sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Areas of fog before noon. Otherwise, mostly sunny, with a high near 57.
Sunday Night
Mostly cloudy, with a low around 48.
Monday
A slight chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 58.
Monday Night
A chance of rain. Mostly cloudy, with a low around 52.
Tuesday
A chance of rain. Patchy fog. Otherwise, partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Lake Berryessa CA
 38.55°N 122.21°W (Elev. 440 ft)
12:26 pm PST Dec 9, 2025
4pm PST Dec 9, 2025-6pm PST Dec 16, 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