National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Flash Flooding Continuing Along the Gulf Coast; Dry Thunderstorms in the West

Excessive rainfall continues to produce life-threatening, locally catastrophic flash flooding along the central Gulf Coast. Isolated to scattered dry thunderstorms may cause lightning-ignited fires and erratic behavior due to gusty winds across parts Oregon, California, and the Great Basin into the weekend. Read More >

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Mostly Cloudy

88°F

31°C

Humidity 55%
Wind Speed E 14 G 22 mph
Barometer 29.85 in (1009.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 19 Jun 5:51 pm CDT
Extended Forecast for

Castle Hills TX

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 75. East wind 5 to 15 mph becoming south southeast after midnight. Winds could gust as high as 20 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 102. South southeast wind 5 to 10 mph.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 77. South southeast wind around 10 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 107. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 95. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 95 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Tuesday

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

    High: 95 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 75. East wind 5 to 15 mph becoming south southeast after midnight. Winds could gust as high as 20 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 102. South southeast wind 5 to 10 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly clear, then becoming mostly cloudy toward daybreak, with a low around 77. South southeast wind around 10 mph. Chance of precipitation is 30%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 94. Heat index values as high as 107. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 95. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 77. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Partly sunny, with a high near 95. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 95.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Mostly sunny, with a high near 95.
Thursday Night
Mostly clear, with a low around 75.
Friday
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:
5:44 pm CDT Jun 19, 2026
Forecast Valid:
6pm CDT Jun 19, 2026-6pm CDT Jun 26, 2026
 
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