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

64°F

18°C

Humidity 68%
Wind Speed N 23 G 28 mph
Barometer 30.04 in (1016.9 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 15 Feb 9:56 am CST
Extended Forecast for

Lockhart TX

  • Today

    Today: Sunny, with a high near 74. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 74 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 46. North wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, then gradually becoming sunny, with a high near 78. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 78 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 51. South southeast wind around 5 mph.

    Low: 51 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 84. West southwest wind around 5 mph becoming south in the afternoon.

    High: 84 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 61. South southeast wind 5 to 10 mph.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 86. South southwest wind 5 to 10 mph.

    High: 86 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 74. North wind 10 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 46. North wind around 5 mph becoming calm in the evening.
Washington's Birthday
Partly sunny, then gradually becoming sunny, with a high near 78. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Increasing clouds, with a low around 51. South southeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 82. South wind 5 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 58. South wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 84. West southwest wind around 5 mph becoming south in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 61. South southeast wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 86. South southwest wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 59.
Friday
Partly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.7°W (Elev. 564 ft)
Last Update:
9:44 am CST Feb 15, 2026
Forecast Valid:
10am CST Feb 15, 2026-6pm CST Feb 21, 2026
 
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Additional Resources

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