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

85°F

29°C

Humidity 63%
Wind Speed E 15 mph
Barometer 29.98 in (1013.2 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 13 Jul 6:51 pm CDT
Extended Forecast for

Castle Hills TX

Flood Watch July 13, 07:12pm until July 14, 09:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 13, 07:12pm until July 14, 09:00am

    NOW until 9:00am Mon

    Flood Watch

  • Tonight

    Low: 75 °F

    Chance
    T-storms

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming south around 5 mph in the morning.

    High: 92 °F

    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 75. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 75 °F

    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 93. Heat index values as high as 101. South southeast wind 5 to 10 mph.

    High: 93 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 95. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 73 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 96. South southeast wind 5 to 10 mph.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 75. East wind 5 to 10 mph becoming south southeast after midnight.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 92. Heat index values as high as 102. Calm wind becoming south around 5 mph in the morning.
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 75. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 93. Heat index values as high as 101. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 75. Southeast wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 95. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, 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 96. South southeast wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 74. Southeast wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 95.
Friday Night
Partly cloudy, with a low around 75.
Saturday
Mostly sunny, with a high near 96.
Saturday Night
Partly cloudy, with a low around 75.
Sunday
Mostly sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.53°W (Elev. 846 ft)
Last Update:
6:53 pm CDT Jul 13, 2025
Forecast Valid:
7pm CDT Jul 13, 2025-6pm CDT Jul 20, 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