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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

55°F

13°C

Humidity 93%
Wind Speed N 0 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 23 Aug 04:20 AM PDT
Extended Forecast for

Yountville CA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind becoming southeast 5 to 7 mph in the afternoon.

    High: 90 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. Southeast wind 3 to 6 mph.

    Low: 55 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Southeast wind 3 to 7 mph.

    High: 86 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Patchy fog after midnight. Otherwise, increasing clouds, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 86 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 55. Southeast wind 3 to 6 mph.
Monday
Mostly cloudy through mid morning, then gradual clearing, with a high near 86. Southeast wind 3 to 7 mph.
Monday Night
Patchy fog after midnight. Otherwise, increasing clouds, with a low around 53. Calm wind.
Tuesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
Partly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Yountville CA
 38.39°N 122.37°W (Elev. 558 ft)
Last Update:
1:46 am PDT Aug 23, 2026
Forecast Valid:
4am PDT Aug 23, 2026-6pm PDT Aug 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation