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

82°F

28°C

Humidity 74%
Wind Speed E 12 G 17 mph
Barometer 29.99 in
Dewpoint 73°F (23°C)
Visibility 8.00 mi
Heat Index87°F (31°C)
Last update 19 May 10:29 pm CDT
Extended Forecast for

6 Miles E Rio Medina TX

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a slight chance of showers. Mostly cloudy, with a low around 71. East southeast wind around 10 mph becoming north northeast after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 84. East wind 5 to 10 mph.

    High: 84 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. East wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 83. South wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 83 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Southeast wind around 5 mph. Chance of precipitation is 60%.

    Low: 69 °F

    Showers
    Likely

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South wind around 5 mph.

    High: 86 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 5 mph. Chance of precipitation is 70%.

    High: 84 °F

    Showers
    Likely then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 68. East wind around 5 mph. Chance of precipitation is 80%.

    Low: 68 °F

    Showers

Detailed Forecast

Tonight
Showers and thunderstorms likely before 4am, then a slight chance of showers. Mostly cloudy, with a low around 71. East southeast wind around 10 mph becoming north northeast after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 84. East wind 5 to 10 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. East wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Showers and possibly a thunderstorm. High near 83. South wind 5 to 10 mph. Chance of precipitation is 80%.
Thursday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. Southeast wind around 5 mph. Chance of precipitation is 60%.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South wind around 5 mph.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then showers and thunderstorms likely after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 5 mph. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm. Low around 68. East wind around 5 mph. Chance of precipitation is 80%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Memorial Day
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles E Rio Medina TX
 29.43°N 98.77°W (Elev. 850 ft)
Last Update:
10:38 pm CDT May 19, 2026
Forecast Valid:
10pm CDT May 19, 2026-6pm CDT May 26, 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