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

69°F

21°C

Humidity 61%
Wind Speed N 15 mph
Barometer 30.07 in (1018.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 15 Feb 11:56 am CST
Extended Forecast for

3 Miles NNW Luling TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 75. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 45. North wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, then gradually becoming sunny, with a high near 77. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 77 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 52. Southeast wind around 5 mph.

    Low: 52 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. South southeast wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 83. West southwest wind around 5 mph becoming south southeast in the afternoon.

    High: 83 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 61. South southeast wind around 5 mph.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 85. South wind around 5 mph.

    High: 85 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 75. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 45. North wind around 5 mph becoming calm in the evening.
Washington's Birthday
Partly sunny, then gradually becoming sunny, with a high near 77. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Increasing clouds, with a low around 52. Southeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 83. South wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 59. South southeast wind 5 to 15 mph becoming southwest after midnight. Winds could gust as high as 20 mph.
Wednesday
Partly sunny, with a high near 83. West southwest wind around 5 mph becoming south southeast in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 61. South southeast wind around 5 mph.
Thursday
Mostly cloudy, with a high near 85. South wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 61.
Friday
Partly sunny, with a high near 83.
Friday Night
Mostly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Luling TX
 29.73°N 97.65°W (Elev. 446 ft)
Last Update:
11:46 am CST Feb 15, 2026
Forecast Valid:
12pm CST Feb 15, 2026-6pm CST Feb 21, 2026
 
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