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

69°F

21°C

Humidity 93%
Wind Speed SE 8 mph
Barometer 29.95 in
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 22 Apr 10:56 pm CDT
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 66. South wind around 5 mph.

    Low: 66 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 84 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 68. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South wind 5 to 10 mph.

    High: 86 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 70. South wind around 5 mph.

    Low: 70 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 90. South wind around 5 mph.

    High: 90 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 70. South southeast wind 5 to 10 mph.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 91. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 71. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 66. South wind around 5 mph.
Thursday
Mostly cloudy, with a high near 84. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 68. South southeast wind around 10 mph, with gusts as high as 20 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 70. South wind around 5 mph.
Saturday
Mostly cloudy, with a high near 90. South wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 70. South southeast wind 5 to 10 mph.
Sunday
Mostly cloudy, with a high near 91. South wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 71. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Partly sunny, with a high near 92.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
Partly sunny, with a high near 94.
Tuesday Night
Mostly cloudy, with a low around 69.
Wednesday
Partly sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
11:32 pm CDT Apr 22, 2026
Forecast Valid:
11pm CDT Apr 22, 2026-6pm CDT Apr 29, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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