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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Lockhart TX

  • Today

    Today: Sunny, with a high near 89. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 63. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 90 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 91. South wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 91 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 89. South southeast wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 89 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 89. South wind 15 to 20 mph, with gusts as high as 25 mph.
Tonight
Increasing clouds, with a low around 63. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Partly sunny, with a high near 90. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Increasing clouds, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 91. South wind 10 to 20 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 67. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 89. South southeast wind 10 to 20 mph, with gusts as high as 25 mph.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Saturday Night
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 53.
Sunday
A 40 percent chance of showers. Cloudy, with a high near 67.
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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:
11:32 am CDT Mar 30, 2026
Forecast Valid:
11am CDT Mar 30, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation