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

57°F

14°C

Humidity 83%
Wind Speed S 6 mph
Barometer 30.13 in (1019.8 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 20 Mar 2:56 am CDT
Extended Forecast for

2 Miles SW San Marcos Municipal Airport TX

  • Overnight

    Overnight: Clear, with a low around 54. Southwest wind around 5 mph.

    Low: 54 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 89. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57. South wind 5 to 10 mph.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. South wind 5 to 10 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 94. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88. South southwest wind around 5 mph.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 59. South southwest wind around 5 mph.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 54. Southwest wind around 5 mph.
Friday
Sunny, with a high near 89. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 57. South wind 5 to 10 mph.
Saturday
Sunny, with a high near 94. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 58. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 94. South southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 58. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 88. South southwest wind around 5 mph.
Monday Night
Mostly clear, with a low around 59. South southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Mostly sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 60.
Thursday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW San Marcos Municipal Airport TX
 29.88°N 97.89°W (Elev. 597 ft)
Last Update:
2:44 am CDT Mar 20, 2026
Forecast Valid:
3am CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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