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

73°F

23°C

Humidity 94%
Wind Speed N 3 mph
Barometer 30.06 in (1017.1 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 24 Sep 4:56 am CDT
Extended Forecast for

Lockhart TX

  • Today

    Today: Partly sunny, with a high near 98. Heat index values as high as 103. Light and variable wind becoming east 5 to 10 mph in the morning.

    High: 98 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 73. East wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.

    High: 97 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71. East wind around 5 mph becoming calm after midnight.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 97. Calm wind becoming southeast around 5 mph.

    High: 97 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 72. Southeast wind around 5 mph.

    Low: 72 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 98. Calm wind becoming south around 5 mph.

    High: 98 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. South southeast wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the morning.

    High: 97 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 98. Heat index values as high as 103. Light and variable wind becoming east 5 to 10 mph in the morning.
Tonight
Mostly cloudy, with a low around 73. East wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 71. East wind around 5 mph becoming calm after midnight.
Saturday
Partly sunny, with a high near 97. Calm wind becoming southeast around 5 mph.
Saturday Night
Mostly cloudy, with a low around 72. Southeast wind around 5 mph.
Sunday
Mostly sunny, with a high near 98. Calm wind becoming south around 5 mph.
Sunday Night
Partly cloudy, with a low around 73. South southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 97. Calm wind becoming south southeast around 5 mph in the morning.
Monday Night
Partly cloudy, with a low around 73.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 97.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Wednesday
A 50 percent chance of showers. Partly sunny, with a high near 91.
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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:
2:46 am CDT Sep 24, 2026
Forecast Valid:
5am CDT Sep 24, 2026-6pm CDT Sep 30, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation