Severe Thunderstorms in the Ohio Valley and Mid-Atlantic; Heat Continuing in the Central U.S.

Widespread strong to severe thunderstorms are expected from the Upper Ohio Valley into the Mid-Atlantic through Friday, with damaging winds as the primary threat. Dangerous heat will continue from the South-Central U.S. to the Midwest, Ohio/Tennessee valleys, and Mid-Atlantic. Widespread Major to Extreme Heat Risk is forecast into the weekend and will confine to the South-Central U.S. by Labor Day Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

light rain,mist

63°F

17°C

Humidity 93%
Wind Speed W 8 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 61°F (16°C)
Visibility 2.50 mi
Last update 03 Sep 06:20 PM PDT
Extended Forecast for

Napa CA

  • Tonight

    Tonight: Patchy fog after 4am.  Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 52. West southwest wind around 6 mph becoming calm  in the evening.

    Low: 52 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 9am.  Otherwise, sunny, with a high near 72. Calm wind becoming west southwest 5 to 9 mph in the afternoon.

    High: 72 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 51. West southwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 51 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Patchy fog before 9am.  Otherwise, partly sunny, then gradually becoming sunny, with a high near 74. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 74 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 5am.  Otherwise, mostly clear, with a low around 52. West southwest wind 5 to 9 mph becoming calm  in the evening.

    Low: 52 °F

    Clear then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 73.

    High: 73 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 52. West southwest wind around 6 mph becoming calm in the evening.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 72. Calm wind becoming west southwest 5 to 9 mph in the afternoon.
Friday Night
Increasing clouds, with a low around 51. West southwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Patchy fog before 9am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 74. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Saturday Night
Patchy fog after 5am. Otherwise, mostly clear, with a low around 52. West southwest wind 5 to 9 mph becoming calm in the evening.
Sunday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 73.
Sunday Night
Mostly clear, with a low around 53.
Labor Day
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 57.
Wednesday
Partly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
A slight chance of rain. Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Napa CA
 38.29°N 122.29°W (Elev. 20 ft)
1:26 pm PDT Sep 3, 2026
6pm PDT Sep 3, 2026-6pm PDT Sep 10, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database