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.

Fog/Mist

75°F

24°C

Humidity 88%
Wind Speed S 5 mph
Barometer 29.77 in (1006.3 mb)
Dewpoint 71°F (22°C)
Visibility 4.00 mi
Last update 25 Apr 7:51 am CDT
Extended Forecast for

Castle Hills TX

  • Today

    Today: Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 92. South wind around 5 mph.

    High: 92 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 69. South southeast wind around 5 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 92. Heat index values as high as 100. South wind around 5 mph.

    High: 92 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 71. South southeast wind 5 to 10 mph.

    Low: 71 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 95. South wind around 5 mph.

    High: 95 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 73. Southeast wind around 5 mph.

    Low: 73 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 96. South wind 5 to 10 mph.

    High: 96 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. Southeast wind 5 to 10 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 93. East southeast wind around 5 mph.

    High: 93 °F

    Partly Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 92. South wind around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 69. South southeast wind around 5 mph.
Sunday
Mostly cloudy, with a high near 92. Heat index values as high as 100. South wind around 5 mph.
Sunday Night
Mostly cloudy, with a low around 71. South southeast wind 5 to 10 mph.
Monday
Partly sunny, with a high near 95. South wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 73. Southeast wind around 5 mph.
Tuesday
Partly sunny, with a high near 96. South wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 71. Southeast wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 93. East southeast wind around 5 mph.
Wednesday Night
Mostly cloudy, with a low around 69.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
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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:
6:42 am CDT Apr 25, 2026
Forecast Valid:
8am CDT Apr 25, 2026-6pm CDT May 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation