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 8 mph
Barometer 30.09 in (1018.0 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 8 Aug 1:56 am CDT
Extended Forecast for

3 Miles WSW Kyle TX

  • Overnight

    Overnight: Mostly clear, with a low around 74. South southwest wind around 5 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97. Heat index values as high as 104. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 97. Heat index values as high as 106. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Sunday Night

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

    Low: 75 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 96. Light south wind becoming south southeast 5 to 10 mph in the morning.

    High: 96 °F

    Mostly Sunny

  • Monday Night

    Monday 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

  • Tuesday

    Tuesday: Sunny, with a high near 98. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 98 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 74. South southwest wind around 5 mph.
Saturday
Sunny, with a high near 97. Heat index values as high as 104. Calm wind becoming south southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 97. Heat index values as high as 106. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 96. Light south wind becoming south southeast 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 76. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 98. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 76. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Sunny and hot, with a high near 99.
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 76.
Friday
Mostly 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 WSW Kyle TX
 29.97°N 97.92°W (Elev. 650 ft)
Last Update:
1:44 am CDT Aug 8, 2026
Forecast Valid:
2am CDT Aug 8, 2026-6pm CDT Aug 14, 2026
 
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Additional Resources

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