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

76°F

24°C

Humidity 85%
Wind Speed S 7 mph
Barometer 29.78 in (1006.6 mb)
Dewpoint 71°F (22°C)
Visibility 7.00 mi
Heat Index77°F (25°C)
Last update 27 Apr 4:51 am CDT
Extended Forecast for

Castle Hills TX

  • Today

    Today: Patchy fog between 8am and 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 93. Heat index values as high as 101. Southeast wind around 5 mph.

    High: 93 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 74. Southeast wind 5 to 10 mph.

    Low: 74 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 102. South southeast wind 5 to 10 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Tuesday Night

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

    Low: 72 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. South wind around 5 mph becoming east northeast in the afternoon.

    High: 92 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. Northeast wind around 10 mph.

    Low: 67 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. East wind around 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. East wind around 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Chance
    T-storms

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. East wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Patchy fog between 8am and 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 93. Heat index values as high as 101. Southeast wind around 5 mph.
Tonight
Increasing clouds, with a low around 74. Southeast wind 5 to 10 mph.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 94. Heat index values as high as 102. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 92. South wind around 5 mph becoming east northeast in the afternoon.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 67. Northeast wind around 10 mph.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. East wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. East wind around 15 mph, with gusts as high as 25 mph.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. East wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 70.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 75.
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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:
2:42 am CDT Apr 27, 2026
Forecast Valid:
5am CDT Apr 27, 2026-6pm CDT May 3, 2026
 
Forecast Discussion
 
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Additional Resources

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