Areas of Dangerous Heat and Heavy Rainfall Today

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley today. Heat Advisories remain in effect. Heavy to excessive rainfall today could bring areas of flooding to parts of the northern High Plains and Midwest into the Ohio Valley. Flood Watches remain in effect. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

64°F

18°C

Humidity 72%
Wind Speed SSW 12 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 20 Sep 03:00 PM PDT
Extended Forecast for

7 Miles SSE Lake Berryessa CA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 80. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 58. Southwest wind around 6 mph becoming calm  in the evening.

    Low: 58 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 56. Calm wind.
Monday
Sunny, with a high near 80. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Mostly clear, with a low around 55. Southwest wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 83. Calm wind.
Tuesday Night
Clear, with a low around 58. Southwest wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSE Lake Berryessa CA
 38.48°N 122.22°W (Elev. 1798 ft)
1:25 pm PDT Sep 20, 2026
3pm PDT Sep 20, 2026-6pm PDT Sep 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database