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.

Overcast

27°C

80°F

Humidity 69%
Wind Speed NE 15 km/h
Barometer 1016.0 mb (30.06 in)
Dewpoint 21°C (69°F)
Visibility 16 km
Heat Index28°C (83°F)
Last update 13 Jul 1:51 pm CDT
Extended Forecast for

Castle Hills TX

Flood Watch July 13, 02:06pm until July 13, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 13, 02:06pm until July 13, 07:00pm

    NOW until 7:00pm Sun

    Flood Watch

  • This Afternoon

    High: 33 °C

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 24. Southeast wind around 10 km/h. Chance of precipitation is 30%.

    Low: 24 °C

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 33. Heat index values as high as 39. South wind 5 to 10 km/h.

    High: 33 °C

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 24. Southeast wind 10 to 15 km/h. Chance of precipitation is 30%.

    Low: 24 °C

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 34. South southeast wind 10 to 15 km/h.

    High: 34 °C

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. Southeast wind 10 to 15 km/h.

    Low: 24 °C

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 35. South southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.

    High: 35 °C

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.

    Low: 23 °C

    Partly Cloudy

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 33. West wind around 10 km/h becoming northeast.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a low around 24. Southeast wind around 10 km/h. Chance of precipitation is 30%.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 33. Heat index values as high as 39. South wind 5 to 10 km/h.
Monday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Mostly cloudy, with a low around 24. Southeast wind 10 to 15 km/h. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 34. South southeast wind 10 to 15 km/h.
Tuesday Night
Mostly cloudy, with a low around 24. Southeast wind 10 to 15 km/h.
Wednesday
Mostly sunny, with a high near 35. South southeast wind 10 to 20 km/h, with gusts as high as 30 km/h.
Wednesday Night
Partly cloudy, with a low around 23. South southeast wind 10 to 15 km/h, with gusts as high as 30 km/h.
Thursday
Mostly sunny, with a high near 36. South southeast wind 10 to 15 km/h.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 35.
Friday Night
Partly cloudy, with a low around 24.
Saturday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.53°W (Elev. 846 m)
Last Update:
1:50 pm CDT Jul 13, 2025
Forecast Valid:
2pm CDT Jul 13, 2025-6pm CDT Jul 19, 2025
 
Forecast Discussion
 
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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