National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

70°F

21°C

Humidity 60%
Wind Speed SSW 12 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Oct 03:35 PM PDT
Extended Forecast for

Lake Berryessa CA

  • Tonight

    Tonight: Mostly clear, with a low around 49. Southwest wind around 6 mph becoming calm in the evening.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Increasing clouds, with a high near 67. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 67 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Cloudy, with a low around 48. Southwest wind around 6 mph becoming calm in the evening.

    Low: 48 °F

    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 66. Calm wind.

    High: 66 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 54. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly cloudy, with a high near 67. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain after 11am. Partly sunny, with a high near 67.

    High: 67 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 49. Southwest wind around 6 mph becoming calm in the evening.
Monday
Increasing clouds, with a high near 67. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Cloudy, with a low around 48. Southwest wind around 6 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 66. Calm wind.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 54. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 67. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 52.
Thursday
A chance of rain after 11am. Partly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 50.
Saturday
Sunny, with a high near 69.
Saturday Night
A slight chance of rain. Partly cloudy, with a low around 50.
Sunday
A slight chance of rain. Mostly sunny, with a high near 66.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake Berryessa CA
 38.57°N 122.24°W (Elev. 732 ft)
Last Update:
1:47 pm PDT Oct 18, 2026
Forecast Valid:
3pm PDT Oct 18, 2026-6pm PDT Oct 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation