National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Mostly Cloudy

79°F

26°C

Humidity 38%
Wind Speed SE 10 mph
Barometer 30.01 in (1014.6 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 8 Apr 5:51 pm CDT
Extended Forecast for

Castle Hills TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. South southeast wind around 5 mph.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. East southeast wind 5 to 10 mph.

    High: 81 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Increasing clouds, with a low around 64. East southeast wind 5 to 10 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 81 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 66. East southeast wind 5 to 10 mph.

    Low: 66 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 82 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Cloudy, with a low around 67. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. South southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 69 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. South southeast wind around 5 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 81. East southeast wind 5 to 10 mph.
Thursday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Increasing clouds, with a low around 64. East southeast wind 5 to 10 mph. Chance of precipitation is 40%.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Friday Night
Mostly cloudy, with a low around 66. East southeast wind 5 to 10 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Cloudy, with a low around 67. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. South southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. South southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82.
Monday Night
Mostly cloudy, with a low around 69.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.51°W (Elev. 869 ft)
Last Update:
6:42 pm CDT Apr 8, 2026
Forecast Valid:
6pm CDT Apr 8, 2026-6pm CDT Apr 15, 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