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.

A Few Clouds

80°F

27°C

Humidity 76%
Wind Speed SE 9 G 21 mph
Barometer 30.06 in (1016.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 24 Jul 11:51 pm CDT
Extended Forecast for

Castle Hills TX

  • Overnight

    Overnight: Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 95. Heat index values as high as 102. South wind around 5 mph.

    High: 95 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 95. Heat index values as high as 102. South wind around 5 mph.

    High: 95 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 95. Heat index values as high as 102. South wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind 5 to 10 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 95. Heat index values as high as 102. South wind around 5 mph.
Sunday Night
Clear, with a low around 76. South southeast wind 5 to 10 mph.
Monday
Sunny, with a high near 98. South wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 77. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Mostly sunny and hot, with a high near 100.
Thursday Night
Mostly clear, with a low around 78.
Friday
Mostly sunny and hot, with a high near 100.
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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:
11:32 pm CDT Jul 24, 2026
Forecast Valid:
12am CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation