Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

55°F

13°C

Humidity 93%
Wind Speed WSW 8 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 54°F (12°C)
Visibility 8.00 mi
Last update 20 Jun 11:35 PM PDT
Extended Forecast for

5 Miles SSE Lake Berryessa CA

  • Tonight

    Tonight: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 56. West southwest wind 5 to 7 mph becoming calm  in the evening.

    Low: 56 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 57. Southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 57 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 54. Calm wind.
Sunday
Sunny, with a high near 88. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Sunday Night
Clear, with a low around 56. West southwest wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 91. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Clear, with a low around 57. Southwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Clear, with a low around 58.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Clear, with a low around 58.
Thursday
Sunny, with a high near 92.
Thursday Night
Clear, with a low around 57.
Friday
Sunny, with a high near 89.
Friday Night
Clear, with a low around 58.
Saturday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Lake Berryessa CA
 38.53°N 122.2°W (Elev. 440 ft)
11:26 pm PDT Jun 20, 2026
11pm PDT Jun 20, 2026-6pm PDT Jun 27, 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