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.

A Few Clouds

79°F

26°C

Humidity 85%
Wind Speed S 8 mph
Barometer 29.90 in (1011.7 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 29 Jul 12:56 am CDT
Extended Forecast for

3 Miles NE Kyle TX

  • Overnight

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

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 105. South southwest wind 5 to 10 mph.

    High: 98 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 99. Heat index values as high as 106. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

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

    High: 100 °F

    Hot

  • Friday Night

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

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 101. Southwest wind around 5 mph.

    High: 101 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 78. East southeast wind around 5 mph becoming west southwest after midnight.

    Low: 78 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 75. South wind 5 to 10 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 98. Heat index values as high as 105. South southwest wind 5 to 10 mph.
Wednesday Night
Increasing clouds, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 99. Heat index values as high as 106. South wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 75. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 77. South wind 5 to 10 mph.
Saturday
Mostly sunny and hot, with a high near 101. Southwest wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 78. East southeast wind around 5 mph becoming west southwest after midnight.
Sunday
Mostly sunny and hot, with a high near 100.
Sunday Night
Mostly clear, with a low around 77.
Monday
Sunny and hot, with a high near 101.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 99.
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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:
1:30 am CDT Jul 29, 2026
Forecast Valid:
1am CDT Jul 29, 2026-6pm CDT Aug 4, 2026
 
Forecast Discussion
 
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Additional Resources

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