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

67°F

19°C

Humidity 68%
Wind Speed SW 20 G 26 mph
Barometer 29.80 in (1008.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 25 Feb 9:56 am CST
Extended Forecast for

3 Miles NNW San Marcos Municipal Airport TX

  • Today

    Today: Sunny, with a high near 87. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. South southwest wind around 10 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 89. South southwest wind around 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. East wind around 5 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 54. East wind around 5 mph becoming calm.

    Low: 54 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. South wind 5 to 10 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 85. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 87. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 57. South southwest wind around 10 mph.
Thursday
Sunny, with a high near 89. South southwest wind around 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Mostly clear, with a low around 57. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 82. East wind around 5 mph.
Friday Night
Mostly clear, with a low around 54. East wind around 5 mph becoming calm.
Saturday
Sunny, with a high near 85. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 56. South wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 85. South wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Mostly sunny, with a high near 85.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW San Marcos Municipal Airport TX
 29.95°N 97.89°W (Elev. 646 ft)
Last Update:
5:44 am CST Feb 25, 2026
Forecast Valid:
10am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
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