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

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

A Few Clouds

59°F

15°C

Humidity 29%
Wind Speed N 15 G 24 mph
Barometer 30.32 in (1025.5 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 21 Feb 8:51 pm CST
Extended Forecast for

Castle Hills TX

  • Tonight

    Tonight: Clear, with a low around 41. North wind around 15 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. Northeast wind around 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 65. Northeast wind around 5 mph becoming southeast in the afternoon.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Southeast wind around 5 mph becoming south southwest after midnight.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. South wind 5 to 10 mph.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 41. North wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 65. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 39. Northeast wind around 5 mph.
Monday
Sunny, with a high near 65. Northeast wind around 5 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 40. Southeast wind around 5 mph becoming south southwest after midnight.
Tuesday
Sunny, with a high near 74. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 53. South wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 86. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 58. South wind 5 to 10 mph.
Thursday
Sunny, with a high near 85.
Thursday Night
Clear, with a low around 52.
Friday
Sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Hills TX
 29.53°N 98.53°W (Elev. 846 ft)
Last Update:
5:44 pm CST Feb 21, 2026
Forecast Valid:
9pm CST Feb 21, 2026-6pm CST Feb 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation