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

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Fog/Mist

82°F

28°C

Humidity 85%
Wind Speed S 9 mph
Barometer 30.15 in (1020.3 mb)
Dewpoint 77°F (25°C)
Visibility 5.00 mi
Heat Index90°F (32°C)
Last update 15 Aug 8:56 am CDT
Extended Forecast for

Kyle TX

  • Today

    Today: Sunny and hot, with a high near 99. Heat index values as high as 105. South wind around 10 mph, with gusts as high as 20 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny and hot, with a high near 99. South wind around 5 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. Southwest wind around 5 mph becoming south southeast in the afternoon.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 99. South southwest wind around 5 mph.

    High: 99 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. South wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 105. South wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, then gradually becoming sunny and hot, with a high near 99. South wind around 5 mph.
Sunday Night
Mostly clear, with a low around 74. South southeast wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 99. Southwest wind around 5 mph becoming south southeast in the afternoon.
Monday Night
Mostly clear, with a low around 76. South southeast wind around 5 mph.
Tuesday
Sunny and hot, with a high near 99. South southwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 76. South wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Mostly clear, with a low around 75.
Friday
Mostly sunny and hot, with a high near 100.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 30.02°N 97.89°W (Elev. 797 ft)
Last Update:
6:44 am CDT Aug 15, 2026
Forecast Valid:
9am CDT Aug 15, 2026-6pm CDT Aug 21, 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