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.

Overcast

74°F

23°C

Humidity 94%
Wind Speed S 7 mph
Barometer 29.74 in (1006.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 25 Apr 5:56 am CDT
Extended Forecast for

Lockhart TX

  • Today

    Today: Areas of fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 91. South wind 5 to 10 mph.

    High: 91 °F

    Areas Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 69. South wind around 5 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 91. South wind 5 to 10 mph.

    High: 91 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 71. South southeast wind around 10 mph.

    Low: 71 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 94. South wind around 10 mph.

    High: 94 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 95. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 95 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 70. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Partly sunny, with a high near 92. South wind 5 to 10 mph becoming east southeast in the afternoon.

    High: 92 °F

    Partly Sunny

Detailed Forecast

Today
Areas of fog before 10am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 91. South wind 5 to 10 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Increasing clouds, with a low around 69. South wind around 5 mph.
Sunday
Mostly cloudy, with a high near 91. South wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 71. South southeast wind around 10 mph.
Monday
Mostly cloudy, with a high near 94. South wind around 10 mph.
Monday Night
Mostly cloudy, with a low around 72. South southeast wind 5 to 10 mph.
Tuesday
Partly sunny, with a high near 95. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 70. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, with a high near 92. South wind 5 to 10 mph becoming east southeast in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 68.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Friday
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lockhart TX
 29.88°N 97.7°W (Elev. 564 ft)
Last Update:
5:32 am CDT Apr 25, 2026
Forecast Valid:
6am CDT Apr 25, 2026-6pm CDT May 1, 2026
 
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Additional Resources

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