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.

Partly Cloudy

81°F

27°C

Humidity 67%
Wind Speed SE 6 mph
Barometer 30.03 in (1014.9 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 23 Sep 12:51 am CDT
Extended Forecast for

Castle Hills TX

  • Overnight

    Overnight: Partly cloudy, with a low around 76. South southeast wind around 5 mph becoming calm.

    Low: 76 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 94. Heat index values as high as 100. North wind 5 to 10 mph becoming east southeast in the morning.

    High: 94 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 76. East southeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 76 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 94. Heat index values as high as 100. North northeast wind 5 to 10 mph becoming east in the morning.

    High: 94 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. East wind 5 to 10 mph becoming light south southeast after midnight.

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 93. Calm wind becoming east southeast around 5 mph in the morning.

    High: 93 °F

    Mostly Sunny

  • Friday Night

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

    Low: 75 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 93. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 93 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 76. South southeast wind around 5 mph becoming calm.
Wednesday
Partly sunny, with a high near 94. Heat index values as high as 100. North wind 5 to 10 mph becoming east southeast in the morning.
Wednesday Night
Mostly cloudy, with a low around 76. East southeast wind 5 to 10 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 94. Heat index values as high as 100. North northeast wind 5 to 10 mph becoming east in the morning.
Thursday Night
Partly cloudy, with a low around 76. East wind 5 to 10 mph becoming light south southeast after midnight.
Friday
Mostly sunny, with a high near 93. Calm wind becoming east southeast around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 75. East southeast wind 5 to 10 mph.
Saturday
Partly sunny, with a high near 93. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 76. South southeast wind around 5 mph.
Sunday
Partly sunny, with a high near 94.
Sunday Night
Partly cloudy, with a low around 76.
Monday
Mostly sunny, with a high near 94.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.
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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:
1:24 am CDT Sep 23, 2026
Forecast Valid:
1am CDT Sep 23, 2026-6pm CDT Sep 29, 2026
 
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Additional Resources

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Chance of Precipitation