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

63°F

17°C

Humidity 76%
Wind Speed E 5 mph
Barometer 30.14 in (1020.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 2 May 8:56 pm CDT
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Clear, with a low around 51. Calm wind.

    Low: 51 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South southeast wind around 5 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 87. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 87 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 73. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89. South wind 5 to 10 mph becoming west in the afternoon.

    High: 89 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 61 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 51. Calm wind.
Sunday
Sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. South southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 84. South wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 87. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 73. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89. South wind 5 to 10 mph becoming west in the afternoon.
Wednesday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 61. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A 30 percent chance of showers, mainly before 1pm. Partly sunny, with a high near 76.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 58.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.68°W (Elev. 525 ft)
Last Update:
6:44 pm CDT May 2, 2026
Forecast Valid:
9pm CDT May 2, 2026-6pm CDT May 9, 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