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.

Overcast

79°F

26°C

Humidity 89%
Wind Speed SE 6 mph
Barometer 30.14 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 16 Aug 5:55 am CDT
Extended Forecast for

Castroville TX

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing and hot, with a high near 100. Heat index values as high as 103. South southeast wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. Southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. South wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 102. South southeast wind 5 to 10 mph.

    High: 102 °F

    Hot

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing and hot, with a high near 100. Heat index values as high as 103. South southeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.
Monday
Partly sunny, then gradually becoming sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 100. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 76. Southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 101. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny and hot, with a high near 102. South southeast wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 76.
Friday
Mostly sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 76.
Saturday
Sunny and hot, with a high near 101.
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ABOUT THIS FORECAST

 
Point Forecast:
Castroville TX
 29.36°N 98.87°W (Elev. 787 ft)
Last Update:
5:32 am CDT Aug 16, 2026
Forecast Valid:
6am CDT Aug 16, 2026-6pm CDT Aug 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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