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

90°F

32°C

Humidity 59%
Wind Speed S 10 G 17 mph
Barometer 30.17 in (1020.8 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 7 Aug 10:56 am CDT
Extended Forecast for

5 Miles W San Marcos TX

  • Today

    Today: Sunny, with a high near 96. Heat index values as high as 102. South southeast wind around 5 mph.

    High: 96 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 74. South southeast wind around 5 mph.

    Low: 74 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 97. Heat index values as high as 102. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 73. East southeast wind around 5 mph becoming south after midnight.

    Low: 73 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. East southeast wind 5 to 10 mph becoming light south after midnight.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. Southeast wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 94 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 96. Heat index values as high as 102. South southeast wind around 5 mph.
Tonight
Clear, with a low around 74. South southeast wind around 5 mph.
Friday
Sunny, with a high near 97. Heat index values as high as 102. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night
Clear, with a low around 73. East southeast wind around 5 mph becoming south after midnight.
Saturday
Sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 73. East southeast wind 5 to 10 mph becoming light south after midnight.
Sunday
Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 73. Southeast wind around 5 mph.
Monday
Sunny, with a high near 94. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Mostly sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W San Marcos TX
 29.88°N 98.02°W (Elev. 797 ft)
Last Update:
8:42 am CDT Aug 7, 2025
Forecast Valid:
11am CDT Aug 7, 2025-6pm CDT Aug 13, 2025
 
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Additional Resources

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