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

Severe Weather in the Central U.S.; Critical Fire Weather in the Southern Plains

Severe thunderstorms are expected to form today from northern Oklahoma into southern Minnesota. Very large hail and tornadoes will be the initial threats this afternoon, then transition into a wind threat tonight. Gusty winds, warm temperatures, and very dry conditions will create a Critical Risk of fire weather across portions of the southern Plains today. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

52°F

11°C

Humidity 96%
Wind Speed N 0 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 23 Apr 08:54 AM PDT
Extended Forecast for

6 Miles SE Lake Berryessa CA

  • Today

    Today: Sunny, with a high near 72. Light north northwest wind.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 46. Calm wind.

    Low: 46 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 70. Calm wind becoming south southwest around 6 mph in the afternoon.

    High: 70 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 45. Southwest wind around 6 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Areas of fog before 8am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 65 °F

    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 65.

    High: 65 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 72. Light north northwest wind.
Tonight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 46. Calm wind.
Friday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 70. Calm wind becoming south southwest around 6 mph in the afternoon.
Friday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 45. Southwest wind around 6 mph becoming calm in the evening.
Saturday
Areas of fog before 8am. Otherwise, mostly sunny, with a high near 65. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 47.
Sunday
Mostly sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Lake Berryessa CA
 38.51°N 122.2°W (Elev. 541 ft)
Last Update:
8:31 am PDT Apr 23, 2026
Forecast Valid:
9am PDT Apr 23, 2026-6pm PDT Apr 29, 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