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

77°F

25°C

Humidity 89%
Wind Speed N 2 mph
Barometer 30.05 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 28 Aug 8:15 am CDT
Extended Forecast for

Castroville TX

  • Today

    Today: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 104. North northeast wind around 5 mph.

    High: 99 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: A chance of thunderstorms before 7pm. Mostly clear, with a low around 74. East wind 5 to 10 mph becoming light east southeast after midnight. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 103. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74. East southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. Southeast wind 5 to 10 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.

    High: 99 °F

    Hot

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 104. North northeast wind around 5 mph.
Tonight
A chance of thunderstorms before 7pm. Mostly clear, with a low around 74. East wind 5 to 10 mph becoming light east southeast after midnight. Chance of precipitation is 30%.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 103. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 74. East southeast wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 73. Southeast wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 74. Southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 99. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Mostly sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castroville TX
 29.34°N 98.87°W (Elev. 728 ft)
Last Update:
7:56 am CDT Aug 28, 2026
Forecast Valid:
8am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation