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 with Haze

74°F

23°C

Humidity 97%
Wind Speed S 5 mph
Barometer 29.99 in (1014.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 27 Jul 5:56 am CDT
Extended Forecast for

3 Miles WSW Kyle TX

  • Today

    Today: Sunny, with a high near 97. Heat index values as high as 102. South wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Tonight

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

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 97. Heat index values as high as 104. South wind 5 to 10 mph.

    High: 97 °F

    Becoming
    Sunny

  • Tuesday Night

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

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Wednesday Night

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

    Low: 76 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 99. South southwest wind around 5 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and hot, with a high near 100. South southwest wind around 5 mph.

    High: 100 °F

    Hot

Detailed Forecast

Today
Sunny, with a high near 97. Heat index values as high as 102. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 74. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 97. Heat index values as high as 104. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 98. South wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny and hot, with a high near 99. South southwest wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 76. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny and hot, with a high near 100. South southwest wind around 5 mph.
Friday Night
Partly cloudy, with a low around 79.
Saturday
Mostly sunny and hot, with a high near 100.
Saturday Night
Partly cloudy, with a low around 80.
Sunday
Mostly sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Kyle TX
 29.97°N 97.92°W (Elev. 650 ft)
Last Update:
5:42 am CDT Jul 27, 2026
Forecast Valid:
6am CDT Jul 27, 2026-6pm CDT Aug 2, 2026
 
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Additional Resources

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