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

55°F

13°C

Humidity 93%
Wind Speed SSW 4 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Mar 05:20 AM PDT
Extended Forecast for

6 Miles SE Lake Berryessa CA

  • Today

    Today: Mostly sunny, with a high near 85. Calm wind becoming west around 6 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. West northwest wind 3 to 6 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. North northwest wind around 5 mph becoming light and variable.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 80. Light southwest wind.

    High: 80 °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 81.

    High: 81 °F

    Sunny

  • Tuesday Night

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

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 85. Calm wind becoming west around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 57. West northwest wind 3 to 6 mph.
Sunday
Sunny, with a high near 82. North northwest wind around 5 mph becoming light and variable.
Sunday Night
Partly cloudy, with a low around 51. West southwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 80. Light southwest wind.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 51.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Lake Berryessa CA
 38.51°N 122.2°W (Elev. 541 ft)
2:22 am PDT Mar 21, 2026
5am 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