Areas of Severe Thunderstorms and Excessive Rainfall Sunday

Scattered strong to severe thunderstorms may pose a risk for damaging wind gusts over the Carolinas, southeast Virginia, and the Tennessee Valley Sunday afternoon then the northern Plains from late afternoon into Sunday night. Monsoonal thunderstorms may cause locally considerable flash, urban, and small stream flooding in the Southwest U.S. the next few days. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Mostly Cloudy

54°F

12°C

Humidity 93%
Wind Speed W 3 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 19 Jul 12:00 AM PDT
Extended Forecast for

4 Miles WSW Lake Berryessa CA

  • Overnight

    Overnight: Increasing clouds, with a low around 56. Southwest wind 3 to 5 mph.

    Low: 56 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61. Southwest wind around 6 mph.

    Low: 61 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81. West southwest wind 3 to 7 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. Southwest wind 3 to 7 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Increasing clouds, with a low around 56. Southwest wind 3 to 5 mph.
Sunday
Mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 61. Southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 81. West southwest wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 62. Southwest wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 81.
Thursday Night
Clear, with a low around 57.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Lake Berryessa CA
 38.56°N 122.3°W (Elev. 1604 ft)
11:26 pm PDT Jul 18, 2026
12am PDT Jul 19, 2026-6pm PDT Jul 25, 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