Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

57°F

14°C

Humidity 93%
Wind Speed W 8 MPH
Barometer 30.04 in (1017.27 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 Aug 07:35 AM PDT
Extended Forecast for

2 Miles NNE Lake Berryessa CA

  • Today

    Today: Partly sunny, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 84 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

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

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

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

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 86.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 84. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 60. West southwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 62. Southwest wind 5 to 7 mph becoming calm in the evening.
Sunday
Sunny, with a high near 87. Calm wind.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Lake Berryessa CA
 38.6°N 122.22°W (Elev. 440 ft)
2:16 am PDT Aug 21, 2026
7am PDT Aug 21, 2026-6pm PDT Aug 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