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.

Partly Cloudy and Breezy

89°F

32°C

Humidity 41%
Wind Speed S 23 G 28 mph
Barometer 29.86 in (1010.4 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 1 Apr 3:56 pm CDT
Extended Forecast for

2 Miles SSW Lockhart TX

  • Tonight

    Tonight: Increasing clouds, with a low around 68. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 82. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 68. South southeast wind 10 to 20 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 87. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 87 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely, then showers and possibly a thunderstorm after 10am. High near 80. South southeast wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.

    High: 80 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 53. North northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 1pm. Cloudy, with a high near 67. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 67 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Cloudy, with a low around 51. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 68. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 82. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Increasing clouds, with a low around 68. South southeast wind 10 to 20 mph, with gusts as high as 25 mph.
Friday
Mostly cloudy, with a high near 87. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South southeast wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Showers likely, then showers and possibly a thunderstorm after 10am. High near 80. South southeast wind 10 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 53. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday
A 30 percent chance of showers, mainly before 1pm. Cloudy, with a high near 67. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Cloudy, with a low around 51. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, with a high near 71.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Mostly cloudy, with a high near 73.
Tuesday Night
Mostly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Lockhart TX
 29.86°N 97.7°W (Elev. 545 ft)
Last Update:
4:02 pm CDT Apr 1, 2026
Forecast Valid:
4pm CDT Apr 1, 2026-6pm CDT Apr 8, 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