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

Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Current conditions at

Vacaville Nut Tree Airport (KVCB)

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

Clear

66°F

19°C

Humidity 59%
Wind Speed WSW 4 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 24 Aug 05:35 AM PDT
Extended Forecast for

Vacaville CASimilar City Names

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 91. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 91 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 63. Southwest wind 6 to 8 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 92. Southwest wind 5 to 8 mph.

    High: 92 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. West southwest wind 5 to 9 mph becoming light in the evening.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 94. Southwest wind 3 to 8 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 91. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 63. Southwest wind 6 to 8 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 92. Southwest wind 5 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 64. West southwest wind 5 to 9 mph becoming light in the evening.
Wednesday
Sunny, with a high near 94. Southwest wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 65.
Thursday
Sunny, with a high near 93.
Thursday Night
Mostly clear, with a low around 64.
Friday
Mostly sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

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 24, 2026
Forecast Valid:
5am PDT Aug 24, 2026-6pm PDT Aug 30, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation