Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Clear

77°F

25°C

Humidity 53%
Wind Speed SSW 5 MPH
Barometer 29.77 in (1008.13 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 03 Aug 12:35 PM PDT
Extended Forecast for

5 Miles WSW Yountville CA

Heat Advisory until August 3, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 3, 10:00pm

    NOW until 10:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 67. West wind around 5 mph.

    Low: 67 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85. Southwest wind 3 to 6 mph.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63. West southwest wind around 6 mph.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Southwest wind 3 to 6 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 63.

    Low: 63 °F

    Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 90. Calm wind becoming southwest around 6 mph.
Tonight
Clear, with a low around 67. West wind around 5 mph.
Tuesday
Sunny, with a high near 85. Southwest wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 63. West southwest wind around 6 mph.
Wednesday
Sunny, with a high near 82. Southwest wind 3 to 6 mph.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny, with a high near 83.
Thursday Night
Clear, with a low around 63.
Friday
Sunny, with a high near 87.
Friday Night
Clear, with a low around 66.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 69.
Sunday
Sunny, with a high near 83.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Yountville CA
 38.38°N 122.45°W (Elev. 2192 ft)
11:27 am PDT Aug 3, 2026
12pm PDT Aug 3, 2026-6pm PDT Aug 9, 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