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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Vacaville Nut Tree Airport (KVCB)

Lat: 38.37755°NLon: 121.95853°WElev: 105.0ft.

Clear

70°F

21°C

Humidity 46%
Wind Speed SW 5 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 28 Aug 04:35 AM PDT
Extended Forecast for

Vacaville CASimilar City Names

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 72. Southwest wind around 5 mph.

    Low: 72 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of rain before 10am. Partly sunny, with a high near 86. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60. Southwest wind around 6 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85. Southwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. Southwest wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 60.

    Low: 60 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 72. Southwest wind around 5 mph.
Friday
A 20 percent chance of rain before 10am. Partly sunny, with a high near 86. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 60. Southwest wind around 6 mph.
Saturday
Sunny, with a high near 85. Southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Saturday Night
Clear, with a low around 59. Southwest wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 22 mph.
Sunday
Sunny, with a high near 87.
Sunday Night
Clear, with a low around 60.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vacaville CASimilar City Names
 38.36°N 121.99°W (Elev. 194 ft)
Last Update:
2:00 am PDT Aug 28, 2026
Forecast Valid:
4am PDT Aug 28, 2026-6pm PDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation