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

Napa, Napa County Airport (KAPC)

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

Overcast

47°F

8°C

Humidity 89%
Wind Speed E 9 MPH
Barometer 30.27 in (1025.06 mb)
Dewpoint 44°F (7°C)
Visibility 8.00 mi
Wind Chill43°F (6°C)
Last update 07 Dec 02:54 PM PST
Extended Forecast for

7 Miles SW Lake Berryessa CA

  • Tonight

    Tonight: Patchy dense fog between 1am and 3am.  Otherwise, mostly clear, with a low around 43. Calm wind.

    Low: 43 °F

    Patchy Dense
    Fog

  • Monday

    Monday: Sunny, with a high near 60. Calm wind.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Patchy fog before midnight, then patchy fog after 3am.  Otherwise, mostly clear, with a low around 45. Calm wind.

    Low: 45 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 7am.  Otherwise, sunny, with a high near 61. Calm wind.

    High: 61 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

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

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Thursday Night

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

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy dense fog between 1am and 3am. Otherwise, mostly clear, with a low around 43. Calm wind.
Monday
Sunny, with a high near 60. Calm wind.
Monday Night
Patchy fog before midnight, then patchy fog after 3am. Otherwise, mostly clear, with a low around 45. Calm wind.
Tuesday
Patchy fog before 7am. Otherwise, sunny, with a high near 61. Calm wind.
Tuesday Night
Mostly clear, with a low around 48. Calm wind.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 64.
Friday Night
Mostly clear, with a low around 45.
Saturday
Sunny, with a high near 63.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SW Lake Berryessa CA
 38.51°N 122.34°W (Elev. 699 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