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

84°F

29°C

Humidity 34%
Wind Speed E 10 mph
Barometer 29.66 in (1003.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 19 Feb 4:56 pm CST
Extended Forecast for

Lockhart TX

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, increasing clouds, with a low around 59. East northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 77. Northeast wind around 5 mph.

    High: 77 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming southwest after midnight.

    Low: 60 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77. North wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 66. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. North northeast wind 5 to 10 mph.

    Low: 38 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 67. North northeast wind around 5 mph becoming east in the afternoon.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. East southeast wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after midnight. Otherwise, increasing clouds, with a low around 59. East northeast wind around 5 mph becoming calm in the evening.
Friday
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 77. Northeast wind around 5 mph.
Friday Night
Mostly cloudy, with a low around 60. Northeast wind around 5 mph becoming southwest after midnight.
Saturday
Mostly sunny, with a high near 77. North wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Mostly clear, with a low around 43. North wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 66. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 38. North northeast wind 5 to 10 mph.
Monday
Sunny, with a high near 67. North northeast wind around 5 mph becoming east in the afternoon.
Monday Night
Mostly clear, with a low around 38. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Sunny, with a high near 88.
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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:
4:32 pm CST Feb 19, 2026
Forecast Valid:
5pm CST Feb 19, 2026-6pm CST Feb 26, 2026
 
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