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

72°F

22°C

Humidity 88%
Wind Speed SE 5 mph
Barometer 29.81 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Apr 4:35 am CDT
Extended Forecast for

6 Miles WSW Helotes TX

  • Today

    Today: A slight chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 74. South southeast wind 5 to 10 mph becoming north northeast 15 to 20 mph in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 53. Northeast wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely

  • Sunday

    Sunday: A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 68. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 68 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 54. East wind 5 to 10 mph.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 65. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 56. East wind 5 to 10 mph.

    Low: 56 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Cloudy, with a high near 72. East southeast wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 72 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63. East southeast wind 5 to 10 mph.

    Low: 63 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Southeast wind 5 to 10 mph.

    High: 82 °F

    Cloudy then
    Slight Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 74. South southeast wind 5 to 10 mph becoming north northeast 15 to 20 mph in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 53. Northeast wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 10 percent chance of showers before 7am. Mostly cloudy, with a high near 68. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 54. East wind 5 to 10 mph.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 65. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Monday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 56. East wind 5 to 10 mph.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Cloudy, with a high near 72. East southeast wind 5 to 10 mph. Chance of precipitation is 50%.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63. East southeast wind 5 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Southeast wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 66.
Thursday
Mostly cloudy, with a high near 84.
Thursday Night
Mostly cloudy, with a low around 67.
Friday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WSW Helotes TX
 29.54°N 98.77°W (Elev. 1050 ft)
Last Update:
4:26 am CDT Apr 18, 2026
Forecast Valid:
5am CDT Apr 18, 2026-6pm CDT Apr 24, 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