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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

Napa, Napa County Airport (KAPC)

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

Overcast

59°F

15°C

Humidity 82%
Wind Speed W 14 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Jun 01:20 AM PDT
Extended Forecast for

8 Miles WNW Vacaville CA

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 63. West wind 10 to 15 mph, with gusts as high as 22 mph.

    Low: 63 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 67. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Breezy, with a west southwest wind 15 to 23 mph, with gusts as high as 31 mph.

    Low: 57 °F

    Mostly Clear
    and Breezy

  • Juneteenth

    Juneteenth: Sunny, with a high near 63. West southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. West southwest wind 8 to 18 mph, with gusts as high as 29 mph.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 63. West wind 10 to 15 mph, with gusts as high as 22 mph.
Thursday
Sunny, with a high near 67. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 57. Breezy, with a west southwest wind 15 to 23 mph, with gusts as high as 31 mph.
Juneteenth
Sunny, with a high near 63. West southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Friday Night
Mostly clear, with a low around 54. West southwest wind 8 to 18 mph, with gusts as high as 29 mph.
Saturday
Sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 73.
Sunday Night
Clear, with a low around 60.
Monday
Sunny, with a high near 75.
Monday Night
Clear, with a low around 61.
Tuesday
Sunny, with a high near 78.
Tuesday Night
Clear, with a low around 62.
Wednesday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WNW Vacaville CA
 38.41°N 122.11°W (Elev. 2598 ft)
Last Update:
1:26 am PDT Jun 18, 2026
Forecast Valid:
1am PDT Jun 18, 2026-6pm PDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation