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

60°F

16°C

Humidity 90%
Wind Speed N 10 mph
Barometer 30.07 in (1017.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 12 Nov 3:56 am CST
Extended Forecast for

Lockhart TX

  • Today

    Today: Sunny, with a high near 76. North wind 5 to 10 mph becoming light in the afternoon.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 49. Calm wind.

    Low: 49 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 77. Calm wind becoming south southwest around 5 mph.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 50. South southeast wind around 5 mph becoming calm.

    Low: 50 °F

    Mostly Clear

  • Saturday

    Saturday: A 40 percent chance of showers after noon. Mostly sunny, with a high near 71. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 71 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 55. East southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 55 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 70. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 52. North northeast wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 25 mph.

    Low: 52 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 61. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 76. North wind 5 to 10 mph becoming light in the afternoon.
Tonight
Clear, with a low around 49. Calm wind.
Friday
Sunny, with a high near 77. Calm wind becoming south southwest around 5 mph.
Friday Night
Mostly clear, with a low around 50. South southeast wind around 5 mph becoming calm.
Saturday
A 40 percent chance of showers after noon. Mostly sunny, with a high near 71. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 55. East southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 70. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 52. North northeast wind 5 to 10 mph increasing to 10 to 15 mph after midnight. Winds could gust as high as 25 mph.
Monday
Partly sunny, with a high near 61. North northeast wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 48.
Tuesday
Partly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Partly sunny, with a high near 67.
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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:
1:42 am CST Nov 12, 2026
Forecast Valid:
4am CST Nov 12, 2026-6pm CST Nov 18, 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