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: Mostly cloudy, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 54. North northeast wind around 5 mph becoming calm after midnight.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. Light southwest wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 62. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 89. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 89 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: 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

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 66. South southeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 66 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 90. South wind around 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

Today
Mostly cloudy, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 54. North northeast wind around 5 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 84. Light southwest wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Increasing clouds, with a low around 62. South southeast wind around 10 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 89. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Monday Night
Partly cloudy, 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 91. South wind 10 to 20 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 66. South southeast wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 90. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Thursday Night
Mostly cloudy, with a low around 65.
Friday
Mostly cloudy, with a high near 89.
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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 am CDT Mar 28, 2026
Forecast Valid:
8am CDT Mar 28, 2026-6pm CDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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