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

78°F

26°C

Humidity 87%
Wind Speed S 6 mph
Barometer 30.00 in (1014.9 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 6 Jul 2:56 am CDT
Extended Forecast for

2 Miles SSW Lockhart TX

  • Overnight

    Overnight: Partly cloudy, with a low around 74. South southwest wind around 5 mph.

    Low: 74 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 96. Heat index values as high as 100. West southwest wind around 5 mph becoming south southeast in the afternoon.

    High: 96 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 96. Heat index values as high as 100. South southwest wind around 5 mph.

    High: 96 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 97. South southwest wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South southeast wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 74. South southwest wind around 5 mph.
Monday
Mostly sunny, with a high near 96. Heat index values as high as 100. West southwest wind around 5 mph becoming south southeast in the afternoon.
Monday Night
Mostly clear, with a low around 76. South southeast wind around 5 mph.
Tuesday
Mostly sunny, with a high near 96. Heat index values as high as 100. South southwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 75. South southeast wind 5 to 10 mph.
Wednesday
Sunny, with a high near 97. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 97. South wind 5 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 75. South southeast wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94.
Friday Night
A 30 percent chance of showers. Mostly clear, with a low around 76.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 93. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 77.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Lockhart TX
 29.86°N 97.7°W (Elev. 545 ft)
Last Update:
2:42 am CDT Jul 6, 2026
Forecast Valid:
3am CDT Jul 6, 2026-6pm CDT Jul 12, 2026
 
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Additional Resources

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