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

68°F

20°C

Humidity 84%
Wind Speed Calm
Barometer 30.15 in (1020.5 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 11 May 10:56 pm CDT
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Mostly clear, with a low around 63. North wind around 5 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84. North northeast wind around 5 mph.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 63. East wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming east southeast around 5 mph.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 65. East southeast wind around 5 mph becoming south southwest after midnight.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 90. Light south southwest wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 90 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 70. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 74. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 74 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 63. North wind around 5 mph.
Tuesday
Mostly sunny, with a high near 84. North northeast wind around 5 mph.
Tuesday Night
Clear, with a low around 63. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 89. Calm wind becoming east southeast around 5 mph.
Wednesday Night
Mostly clear, with a low around 65. East southeast wind around 5 mph becoming south southwest after midnight.
Thursday
Mostly sunny, with a high near 90. Light south southwest wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 70. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 74. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, with a high near 91.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 91.
Sunday Night
Mostly cloudy, with a low around 79.
Monday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
6:42 pm CDT May 11, 2026
Forecast Valid:
11pm CDT May 11, 2026-6pm CDT May 18, 2026
 
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Additional Resources

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Chance of Precipitation