Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Read More >

Hazardous Weather Conditions

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

52°F

11°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 17 Mar 03:20 AM PDT
Extended Forecast for

Lake Berryessa CA

Heat Advisory March 17, 03:35am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 03:35am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 63 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 61. Calm wind.

    Low: 61 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61. Calm wind.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a steady temperature around 63. Calm wind.
Tuesday
Sunny, with a high near 88. Calm wind.
Tuesday Night
Clear, with a low around 61. Calm wind.
Wednesday
Sunny, with a high near 89. Calm wind.
Wednesday Night
Clear, with a low around 61. Calm wind.
Thursday
Sunny, with a high near 91.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Berryessa CA
 38.57°N 122.24°W (Elev. 732 ft)
1:54 am PDT Mar 17, 2026
3am PDT Mar 17, 2026-6pm PDT Mar 23, 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