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

70°F

21°C

Humidity 90%
Wind Speed Calm
Barometer 30.14 in (1019.8 mb)
Dewpoint 67°F (19°C)
Visibility 9.00 mi
Last update 12 Sep 7:56 am CDT
Extended Forecast for

4 Miles W San Marcos TX

  • Today

    Today: Sunny, with a high near 96. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 96 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southeast wind around 5 mph becoming calm after midnight.

    Low: 68 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 95. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 95 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph becoming light south southwest after midnight.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 94. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 94 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm after midnight.

    Low: 67 °F

    Partly Cloudy

  • Monday

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

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. East southeast wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the morning.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 96. Light and variable wind becoming southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 68. Southeast wind around 5 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 95. Light and variable wind becoming south southeast 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 68. South southeast wind 5 to 10 mph becoming light south southwest after midnight.
Sunday
Mostly sunny, with a high near 94. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm after midnight.
Monday
Sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 66. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 94. Calm wind becoming east southeast around 5 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny, with a high near 94.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W San Marcos TX
 29.88°N 97.99°W (Elev. 725 ft)
Last Update:
6:50 am CDT Sep 12, 2025
Forecast Valid:
8am CDT Sep 12, 2025-6pm CDT Sep 18, 2025
 
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Additional Resources

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