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

56°F

13°C

Humidity 93%
Wind Speed N 5 mph
Barometer 30.16 in (1020.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 24 Oct 5:56 am CDT
Extended Forecast for

Lockhart TX

  • Today

    Today: Mostly sunny, with a high near 87. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 84. East southeast wind 5 to 10 mph.

    High: 84 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54. East wind around 5 mph becoming calm after midnight.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 83. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 60. East wind around 5 mph becoming calm.

    Low: 60 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 80. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 80 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 59. East southeast wind around 5 mph becoming calm.

    Low: 59 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 87. Light and variable wind becoming southeast 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Partly cloudy, with a low around 61. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 84. East southeast wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 54. East wind around 5 mph becoming calm after midnight.
Monday
Partly sunny, with a high near 83. Calm wind becoming east southeast around 5 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 60. East wind around 5 mph becoming calm.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 80. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 59. East southeast wind around 5 mph becoming calm.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Calm wind becoming east southeast around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 61.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 79.
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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:
5:32 am CDT Oct 24, 2026
Forecast Valid:
6am CDT Oct 24, 2026-6pm CDT Oct 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation