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

54°F

12°C

Humidity 87%
Wind Speed N 0 MPH
Barometer 30.01 in (1016.26 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 17 Mar 02:00 AM PDT
Extended Forecast for

Napa Co. Airport CA

Heat Advisory March 17, 02:24am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory March 17, 02:24am until March 20, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 57 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 54. Southwest wind around 5 mph becoming calm  in the evening.

    Low: 54 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 56. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

Detailed Forecast

Overnight
Clear, with a steady temperature around 57. Calm wind.
Tuesday
Sunny, with a high near 87. Calm wind becoming east southeast around 6 mph in the afternoon.
Tuesday Night
Clear, with a low around 54. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 56. West southwest wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 88.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 90.
Friday Night
Mostly clear, with a low around 57.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 72.
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ABOUT THIS FORECAST

 
Point Forecast:
Napa Co. Airport CA
 38.2°N 122.29°W (Elev. 20 ft)
1:54 am PDT Mar 17, 2026
2am 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