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

66°F

19°C

Humidity 77%
Wind Speed S 5 MPH
Barometer 29.74 in (1007.11 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 03 Aug 09:15 PM PDT
Extended Forecast for

8 Miles WNW Vacaville CA

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

    NOW until 10:00pm Mon

    Heat Advisory

  • Tonight

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. West wind 5 to 8 mph.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Southwest wind 3 to 7 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 66. West southwest wind 5 to 8 mph.

    Low: 66 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 68.

    Low: 68 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 72. West northwest wind 3 to 6 mph.
Tuesday
Sunny, with a high near 88. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 68. West wind 5 to 8 mph.
Wednesday
Sunny, with a high near 83. Southwest wind 3 to 7 mph.
Wednesday Night
Clear, with a low around 66. West southwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 84.
Thursday Night
Clear, with a low around 68.
Friday
Sunny, with a high near 88.
Friday Night
Clear, with a low around 71.
Saturday
Sunny, with a high near 89.
Saturday Night
Clear, with a low around 74.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny, with a high near 76.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WNW Vacaville CA
 38.41°N 122.11°W (Elev. 2598 ft)
1:26 pm PDT Aug 3, 2026
9pm PDT Aug 3, 2026-6pm PDT Aug 10, 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