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

Hazardous Weather Conditions

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

A Few Clouds

76°F

24°C

Humidity 60%
Wind Speed SE 7 mph
Barometer 30.04 in (1015.6 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 12 May 8:51 pm CDT
Extended Forecast for

Castle Hills TX

  • Tonight

    Tonight: Mostly clear, with a low around 65. East southeast wind around 5 mph becoming calm after midnight.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65. Southeast wind around 5 mph.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 92. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. Southeast wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 65. East southeast wind around 5 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 90. Calm wind becoming southeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 65. Southeast wind around 5 mph.
Thursday
Sunny, with a high near 91. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 68. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 71. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Partly sunny, with a high near 92. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 75. Southeast wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly cloudy, with a high near 91.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
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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:
6:44 pm CDT May 12, 2026
Forecast Valid:
9pm CDT May 12, 2026-6pm CDT May 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation