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.

Mostly Cloudy

84°F

29°C

Humidity 65%
Wind Speed E 16 mph
Barometer 29.99 in (1013.6 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 14 Jul 8:51 pm CDT
Extended Forecast for

Castle Hills TX

Flood Watch July 14, 09:05pm until July 15, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 14, 09:05pm until July 15, 07:00am

    NOW until 7:00am Tue

    Flood Watch

  • Tonight

    Low: 76 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms between 1pm and 4pm. Partly sunny, with a high near 94. Heat index values as high as 103. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 94 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 76. Southeast wind 5 to 10 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 103. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 96 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 95. South southeast wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73. Southeast wind 5 to 10 mph.

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 95 °F

    Mostly Sunny

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 76. South southeast wind around 5 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of showers and thunderstorms between 1pm and 4pm. Partly sunny, with a high near 94. Heat index values as high as 103. South southeast wind 5 to 10 mph. Chance of precipitation is 20%.
Tuesday Night
Increasing clouds, with a low around 76. Southeast wind 5 to 10 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 96. Heat index values as high as 103. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 73. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 95. South southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 73. Southeast wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 95. Calm wind becoming south southeast around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 75. Southeast wind around 5 mph.
Saturday
Mostly sunny, with a high near 97.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Mostly sunny, with a high near 97.
Sunday Night
Partly cloudy, with a low around 76.
Monday
Mostly sunny, with a high near 98.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.53°W (Elev. 846 ft)
Last Update:
8:54 pm CDT Jul 14, 2025
Forecast Valid:
9pm CDT Jul 14, 2025-6pm CDT Jul 21, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation