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

33°C

92°F

Humidity 51%
Wind Speed S 24 km/h
Barometer 1011.4 mb (29.93 in)
Dewpoint 22°C (71°F)
Visibility 16 km
Heat Index37°C (99°F)
Last update 12 Jul 6:51 pm CDT
Extended Forecast for

Castle Hills TX

Flood Watch July 12, 07:31pm until July 13, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 12, 07:31pm until July 13, 07:00pm

    NOW until 7:00pm Sun

    Flood Watch

  • Tonight

    Low: 24 °C

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 34. Heat index values as high as 39. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.

    High: 34 °C

    Heavy Rain

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 24. South southeast wind 10 to 15 km/h.

    Low: 24 °C

    Heavy Rain

  • Monday

    Monday: Mostly sunny, with a high near 35. Heat index values as high as 39. South southeast wind 5 to 15 km/h.

    High: 35 °C

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. South southeast wind 10 to 15 km/h.

    Low: 24 °C

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 35. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.

    High: 35 °C

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.

    Low: 24 °C

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.

    High: 36 °C

    Mostly Sunny

Detailed Forecast

Tonight
A 20 percent chance of showers before 10pm. Partly cloudy, with a low around 24. South southeast wind 10 to 20 km/h, with gusts as high as 35 km/h.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 34. Heat index values as high as 39. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.
Sunday Night
A 30 percent chance of showers and thunderstorms before 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 24. South southeast wind 10 to 15 km/h.
Monday
Mostly sunny, with a high near 35. Heat index values as high as 39. South southeast wind 5 to 15 km/h.
Monday Night
Partly cloudy, with a low around 24. South southeast wind 10 to 15 km/h.
Tuesday
Partly sunny, with a high near 35. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.
Tuesday Night
Mostly cloudy, with a low around 24. Southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.
Wednesday
Mostly sunny, with a high near 36. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.
Wednesday Night
Partly cloudy, with a low around 23. South southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.
Thursday
Mostly sunny, with a high near 36.
Thursday Night
Mostly clear, with a low around 23.
Friday
Sunny, with a high near 36.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Sunny, with a high near 36.
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 m)
Last Update:
7:22 pm CDT Jul 12, 2025
Forecast Valid:
7pm CDT Jul 12, 2025-6pm CDT Jul 19, 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