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.

Fair

78°F

26°C

Humidity 85%
Wind Speed S 6 mph
Barometer 30.01 in (1015.4 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 19 Aug 3:56 am CDT
Extended Forecast for

3 Miles NE Kyle TX

  • Today

    Today: Mostly sunny and hot, with a high near 101. Heat index values as high as 105. South southwest wind 5 to 10 mph.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 77. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny and hot, with a high near 102. Heat index values as high as 107. South southwest wind 5 to 10 mph.

    High: 102 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 102. South southwest wind around 5 mph.

    High: 102 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 78. South southwest wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 103. Southwest wind around 5 mph becoming south southeast in the afternoon.

    High: 103 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. South southeast wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 103. Southwest wind around 5 mph becoming south southeast in the afternoon.

    High: 103 °F

    Hot

Detailed Forecast

Today
Mostly sunny and hot, with a high near 101. Heat index values as high as 105. South southwest wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 77. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny and hot, with a high near 102. Heat index values as high as 107. South southwest wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 102. South southwest wind around 5 mph.
Friday Night
Mostly clear, with a low around 78. South southwest wind around 5 mph.
Saturday
Sunny and hot, with a high near 103. Southwest wind around 5 mph becoming south southeast in the afternoon.
Saturday Night
Mostly clear, with a low around 78. South southeast wind around 5 mph.
Sunday
Sunny and hot, with a high near 103. Southwest wind around 5 mph becoming south southeast in the afternoon.
Sunday Night
Mostly clear, with a low around 77.
Monday
Sunny and hot, with a high near 102.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 101.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Kyle TX
 30.02°N 97.84°W (Elev. 702 ft)
Last Update:
2:46 am CDT Aug 19, 2026
Forecast Valid:
4am CDT Aug 19, 2026-6pm CDT Aug 25, 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