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.

Overcast

85°F

29°C

Humidity 75%
Wind Speed S 10 mph
Barometer 30.07 in (1017.2 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 5 Aug 9:56 am CDT
Extended Forecast for

Kyle TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 98. Heat index values as high as 103. South wind around 10 mph.

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 97. Heat index values as high as 104. South wind 5 to 10 mph.

    High: 97 °F

    Becoming
    Sunny

  • Thursday Night

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

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 96. South wind around 5 mph.

    High: 96 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 96. South wind around 5 mph.

    High: 96 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph becoming south southwest after midnight.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 96 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 98. Heat index values as high as 103. South wind around 10 mph.
Tonight
Increasing clouds, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 97. Heat index values as high as 104. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Friday
Mostly sunny, with a high near 96. South wind around 5 mph.
Friday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Saturday
Sunny, with a high near 96. South wind around 5 mph.
Saturday Night
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph becoming south southwest after midnight.
Sunday
Sunny, with a high near 96. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 75.
Monday
Mostly sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 75.
Tuesday
Mostly sunny, with a high near 97.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Kyle TX
 30°N 97.86°W (Elev. 699 ft)
Last Update:
11:44 am CDT Aug 5, 2026
Forecast Valid:
12pm CDT Aug 5, 2026-6pm CDT Aug 11, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation