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 30.02 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 1 Sep 11:55 am CDT
Extended Forecast for

4 Miles NE Rio Medina TX

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 99. Heat index values as high as 102. East wind around 5 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 75. East southeast wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. Heat index values as high as 104. Calm wind becoming south southwest around 5 mph in the afternoon.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 98. South southeast wind 5 to 10 mph.

    High: 98 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 98. East southeast wind around 5 mph.

    High: 98 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 99. Heat index values as high as 102. East wind around 5 mph.
Tonight
Mostly clear, with a low around 75. East southeast wind around 5 mph.
Wednesday
Sunny and hot, with a high near 100. Heat index values as high as 104. Calm wind becoming south southwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 74. Southeast wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 100. South southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 73. Southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 98. South southeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 73. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 98. East southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 74.
Labor Day
Sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Rio Medina TX
 29.47°N 98.82°W (Elev. 951 ft)
Last Update:
11:42 am CDT Sep 1, 2026
Forecast Valid:
12pm CDT Sep 1, 2026-6pm CDT Sep 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation