National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Extreme Heat and Excessive Rainfall Potential

Dangerous and extreme heat will remain across portions of the central U.S. this week, persisting across the mid to lower Mississippi Valley, Gulf Coast, southern Plains and portions of Texas. A heat wave over the Southwest U.S. will peak this weekend. Heavy to excessive rainfall may produce flash flooding from the Delmarva Peninsula north into the Hudson Valley today and tonight. 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 WSW 6 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 28 Jul 09:00 AM PDT
Extended Forecast for

6 Miles SSE Lake Berryessa CA

  • Today

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

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 62. West southwest wind around 6 mph becoming calm in the evening.

    Low: 62 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62. Southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Friday Night

    Friday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

Detailed Forecast

Today
Sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Clear, with a low around 62. West southwest wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 93. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 62. Southwest wind 5 to 7 mph becoming calm in the evening.
Thursday
Sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 62.
Friday
Sunny and hot, with a high near 98.
Friday Night
Clear, with a low around 64.
Saturday
Sunny and hot, with a high near 98.
Saturday Night
Clear, with a low around 66.
Sunday
Sunny and hot, with a high near 98.
Sunday Night
Clear, with a low around 64.
Monday
Sunny and hot, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE Lake Berryessa CA
 38.48°N 122.22°W (Elev. 1798 ft)
Last Update:
2:06 am PDT Jul 28, 2026
Forecast Valid:
9am PDT Jul 28, 2026-6pm PDT Aug 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation