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Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Partly Cloudy

65°F

18°C

Humidity 72%
Wind Speed SSW 8 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 20 Aug 10:54 AM PDT
Extended Forecast for

5 Miles SSE Lake Berryessa CA

  • Today

    Today: Partly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 92 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. Light west southwest wind.

    Low: 60 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 90 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. West southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 60. Light west southwest wind.
Friday
Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 58. West southwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
Clear, with a low around 59.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 59.
Monday
Mostly sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Lake Berryessa CA
 38.53°N 122.2°W (Elev. 440 ft)
Last Update:
11:07 am PDT Aug 20, 2026
Forecast Valid:
11am PDT Aug 20, 2026-6pm PDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation