Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

74°F

23°C

Humidity 59%
Wind Speed SSW 5 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 21 Mar 12:54 PM PDT
Extended Forecast for

7 Miles SSE Lake Berryessa CA

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. West wind 3 to 6 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 56. West wind around 6 mph becoming north northwest after midnight.

    Low: 56 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Northwest wind around 5 mph becoming light and variable.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 77. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Tuesday Night

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

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 81. West wind 3 to 6 mph.
Tonight
Clear, with a low around 56. West wind around 6 mph becoming north northwest after midnight.
Sunday
Sunny, with a high near 79. Northwest wind around 5 mph becoming light and variable.
Sunday Night
Mostly clear, with a low around 50. West southwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 77. Calm wind becoming west southwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSE Lake Berryessa CA
 38.48°N 122.22°W (Elev. 1798 ft)
2:22 am PDT Mar 21, 2026
1pm PDT Mar 21, 2026-6pm PDT Mar 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