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

Castroville Municipal Airport (KCVB)

Lat: 29.34°NLon: 98.85°WElev: 771ft.

Fair

91°F

33°C

Humidity 44%
Wind Speed SE 8 mph
Barometer 29.89 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 31 Jul 8:55 pm CDT
Extended Forecast for

Castroville TX

  • Tonight

    Tonight: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 103. Calm wind becoming north northeast around 5 mph.

    High: 99 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 77. Northeast wind around 5 mph becoming calm in the evening.

    Low: 77 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Northeast wind around 5 mph becoming calm.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78. East southeast wind around 5 mph becoming south after midnight.

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 101. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Southeast wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 103. Calm wind becoming north northeast around 5 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 77. Northeast wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny and hot, with a high near 100. Heat index values as high as 103. Northeast wind around 5 mph becoming calm.
Sunday Night
Mostly clear, with a low around 78. East southeast wind around 5 mph becoming south after midnight.
Monday
Sunny and hot, with a high near 101. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Clear, with a low around 77. South southeast wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 100. Southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 76. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Mostly sunny, with a high near 98.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 97.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castroville TX
 29.34°N 98.84°W (Elev. 735 ft)
Last Update:
6:44 pm CDT Jul 31, 2026
Forecast Valid:
9pm CDT Jul 31, 2026-6pm CDT Aug 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation