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.

Light Rain Fog/Mist

63°F

17°C

Humidity 97%
Wind Speed E 7 mph
Barometer 30.08 in (1017.1 mb)
Dewpoint 62°F (17°C)
Visibility 2.00 mi
Last update 21 Apr 5:51 pm CDT
Extended Forecast for

Castle Hills TX

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a low around 66. East southeast wind 5 to 10 mph.

    Low: 66 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 80. South southeast wind 5 to 10 mph.

    High: 80 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 67. Southeast wind 5 to 10 mph.

    Low: 67 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 69. South southeast wind 5 to 10 mph.

    Low: 69 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 86. South wind around 5 mph.

    High: 86 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 69. South southeast wind around 5 mph.

    Low: 69 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 91. South wind around 5 mph.

    High: 91 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 70. South southeast wind around 5 mph.

    Low: 70 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms. Patchy fog. Otherwise, cloudy, with a low around 66. East southeast wind 5 to 10 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 80. South southeast wind 5 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 67. Southeast wind 5 to 10 mph.
Thursday
Mostly cloudy, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 69. South southeast wind 5 to 10 mph.
Friday
Mostly cloudy, with a high near 86. South wind around 5 mph.
Friday Night
Partly cloudy, with a low around 69. South southeast wind around 5 mph.
Saturday
Mostly cloudy, with a high near 91. South wind around 5 mph.
Saturday Night
Mostly cloudy, with a low around 70. South southeast wind around 5 mph.
Sunday
Mostly cloudy, with a high near 92.
Sunday Night
Partly cloudy, with a low around 72.
Monday
Partly sunny, with a high near 93.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Partly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.53°W (Elev. 846 ft)
Last Update:
5:34 pm CDT Apr 21, 2026
Forecast Valid:
6pm CDT Apr 21, 2026-6pm CDT Apr 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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