Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

57°F

14°C

Humidity 93%
Wind Speed SSW 9 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 03 Jul 11:35 PM PDT
Extended Forecast for

10 Miles SSE Lake Berryessa CA

  • Tonight

    Tonight: Clear, with a low around 54. Calm wind.

    Low: 54 °F

    Clear

  • Independence Day

    Independence Day: Sunny, with a high near 85. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53. Southwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 53 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 53.

    Low: 53 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 54. Calm wind.
Independence Day
Sunny, with a high near 85. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 54. Southwest wind around 6 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 53. Southwest wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Clear, with a low around 53.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Clear, with a low around 57.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles SSE Lake Berryessa CA
 38.44°N 122.18°W (Elev. 997 ft)
11:29 pm PDT Jul 3, 2026
11pm PDT Jul 3, 2026-6pm PDT Jul 10, 2026
 
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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