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.

Overcast

55°F

13°C

Humidity 93%
Wind Speed SW 8 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 04 Jul 02:35 AM PDT
Extended Forecast for

5 Miles WSW Lake Berryessa CA

  • Overnight

    Overnight: Mostly clear, with a low around 54. South southwest wind 3 to 5 mph.

    Low: 54 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 82. South southwest wind 3 to 8 mph.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 53. South southwest wind 5 to 8 mph.

    Low: 53 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 77. Southwest wind 5 to 8 mph.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 52. West southwest wind 6 to 8 mph.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 54. South southwest wind 3 to 5 mph.
Independence Day
Sunny, with a high near 82. South southwest wind 3 to 8 mph.
Saturday Night
Increasing clouds, with a low around 53. South southwest wind 5 to 8 mph.
Sunday
Partly sunny, with a high near 77. Southwest wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 52. West southwest wind 6 to 8 mph.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 51.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Clear, with a low around 57.
Thursday
Sunny, with a high near 87.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Lake Berryessa CA
 38.56°N 122.33°W (Elev. 1975 ft)
1:26 am PDT Jul 4, 2026
2am PDT Jul 4, 2026-6pm PDT Jul 10, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database