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

52°F

11°C

Humidity 75%
Wind Speed N 10 mph
Barometer 30.32 in (1026.4 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 6 Apr 7:56 am CDT
Extended Forecast for

Lockhart TX

  • Today

    Today: Sunny, with a high near 73. Northeast wind around 10 mph, with gusts as high as 20 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. Northeast wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 76. Calm wind becoming east southeast around 5 mph in the morning.

    High: 76 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. East wind around 5 mph becoming calm after midnight.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 78. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 78 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 61. Southeast wind around 5 mph becoming calm after midnight.

    Low: 61 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light east southeast wind becoming southeast 5 to 10 mph in the morning.

    High: 82 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 63. Southeast wind 5 to 10 mph.

    Low: 63 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. East southeast wind 5 to 10 mph.

    High: 82 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 73. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 47. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 76. Calm wind becoming east southeast around 5 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 54. East wind around 5 mph becoming calm after midnight.
Wednesday
Partly sunny, with a high near 78. Light east wind becoming southeast 5 to 10 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 61. Southeast wind around 5 mph becoming calm after midnight.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light east southeast wind becoming southeast 5 to 10 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 63. Southeast wind 5 to 10 mph.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. East southeast wind 5 to 10 mph.
Friday Night
Mostly cloudy, with a low around 65.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.
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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 Apr 6, 2026
Forecast Valid:
8am CDT Apr 6, 2026-6pm CDT Apr 12, 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