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.

Overcast

78°F

26°C

Humidity 69%
Wind Speed S 9 G 21 mph
Barometer 29.87 in (1009.8 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 23 Apr 12:51 pm CDT
Extended Forecast for

Castle Hills TX

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 85. South wind around 10 mph, with gusts as high as 20 mph.

    High: 85 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 70. South southeast wind 5 to 10 mph.

    Low: 70 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 4pm. Patchy fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 85. South wind around 5 mph.

    High: 85 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 70. South southeast wind around 5 mph.

    Low: 70 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 91. South wind around 5 mph.

    High: 91 °F

    Partly Sunny

  • Saturday Night

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

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 92. South wind around 5 mph.

    High: 92 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph.

    Low: 72 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 93. South southwest wind around 5 mph.

    High: 93 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 85. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 70. South southeast wind 5 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 4pm. Patchy fog between 8am and 9am. Otherwise, mostly cloudy, with a high near 85. South wind around 5 mph.
Friday Night
A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 70. South southeast wind around 5 mph.
Saturday
Partly sunny, with a high near 91. South wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 70. South southeast wind around 5 mph.
Sunday
Mostly cloudy, with a high near 92. South wind around 5 mph.
Sunday Night
Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph.
Monday
Mostly cloudy, with a high near 93. South southwest wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 72.
Tuesday
Mostly cloudy, with a high near 95.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Wednesday
Mostly cloudy, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.53°W (Elev. 846 ft)
Last Update:
1:28 pm CDT Apr 23, 2026
Forecast Valid:
1pm CDT Apr 23, 2026-6pm CDT Apr 29, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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