Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

61°F

16°C

Humidity 82%
Wind Speed SSW 4 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 05 Sep 09:35 PM PDT
Extended Forecast for

Yountville CA

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, increasing clouds, with a low around 50. Calm wind.

    Low: 50 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 8am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51. West southwest wind around 5 mph becoming calm  in the evening.

    Low: 51 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Sunny, with a high near 86. North wind around 5 mph becoming calm  in the afternoon.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 11pm.  Partly cloudy, with a low around 58.

    Low: 58 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 90.

    High: 90 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, increasing clouds, with a low around 50. Calm wind.
Sunday
Patchy fog before 8am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 78. Calm wind becoming south southwest 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 51. West southwest wind around 5 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 86. North wind around 5 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 55. Calm wind.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 90.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 58.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Yountville CA
 38.39°N 122.37°W (Elev. 558 ft)
1:55 pm PDT Sep 5, 2026
9pm PDT Sep 5, 2026-6pm PDT Sep 12, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database