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 and Breezy

60°F

16°C

Humidity 44%
Wind Speed N 23 G 31 mph
Barometer 30.31 in (1025.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 12 Mar 12:56 am CDT
Extended Forecast for

2 Miles W San Marcos Municipal Airport TX

  • Overnight

    Overnight: Clear, with a low around 45. North wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 45 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 67. North wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 42. Calm wind.

    Low: 42 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 49. South wind around 5 mph.

    Low: 49 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 92. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 92 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. North northeast wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 45. North wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 67. North wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 42. Calm wind.
Friday
Sunny, with a high near 78. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 49. South wind around 5 mph.
Saturday
Sunny, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 61. South southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 92. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly clear, with a low around 43. North northeast wind 15 to 20 mph, with gusts as high as 35 mph.
Monday
Partly sunny, with a high near 60.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W San Marcos Municipal Airport TX
 29.9°N 97.91°W (Elev. 640 ft)
Last Update:
1:44 am CDT Mar 12, 2026
Forecast Valid:
1am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
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