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.

Mostly Cloudy

77°F

25°C

Humidity 85%
Wind Speed S 12 mph
Barometer 29.75 in (1005.4 mb)
Dewpoint 72°F (22°C)
Visibility 7.00 mi
Heat Index78°F (26°C)
Last update 25 Apr 12:51 am CDT
Extended Forecast for

Castle Hills TX

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. South southwest wind around 5 mph.

    Low: 70 °F

    Patchy Fog

  • Saturday

    Saturday: 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

  • Saturday Night

    Saturday Night: 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

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. South southwest wind around 5 mph.
Saturday
Patchy fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 92. South wind around 5 mph.
Saturday Night
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.
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:
1:24 am CDT Apr 25, 2026
Forecast Valid:
1am CDT Apr 25, 2026-6pm CDT May 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation