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.

Partly Cloudy

76°F

24°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 30.06 in (1017.1 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index75°F (24°C)
Last update 28 Jun 2:56 am CDT
Extended Forecast for

Lockhart TX

  • Overnight

    Overnight: Mostly clear, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 100. Light south wind becoming south southeast 5 to 10 mph in the morning.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 73. South southeast wind 5 to 10 mph becoming light south after midnight.

    Low: 73 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Widespread haze after 1pm. Mostly sunny, with a high near 92. Light south wind becoming south southeast 5 to 10 mph in the morning.

    High: 92 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Widespread haze. Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Haze

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Widespread haze. Mostly sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 93 °F

    Haze then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Widespread haze. Partly cloudy, with a low around 72. South southeast wind 5 to 10 mph becoming light south southwest after midnight.

    Low: 72 °F

    Haze

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Widespread haze. Mostly sunny, with a high near 92. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 92 °F

    Haze then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Widespread haze. Partly cloudy, with a low around 72. South southeast wind 5 to 10 mph.

    Low: 72 °F

    Haze

Detailed Forecast

Overnight
Mostly clear, with a low around 73. South wind around 5 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 100. Light south wind becoming south southeast 5 to 10 mph in the morning.
Saturday Night
Partly cloudy, with a low around 73. South southeast wind 5 to 10 mph becoming light south after midnight.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Widespread haze after 1pm. Mostly sunny, with a high near 92. Light south wind becoming south southeast 5 to 10 mph in the morning.
Sunday Night
Widespread haze. Partly cloudy, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Widespread haze. Mostly sunny, with a high near 93. South wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
Widespread haze. Partly cloudy, with a low around 72. South southeast wind 5 to 10 mph becoming light south southwest after midnight.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Widespread haze. Mostly sunny, with a high near 92. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Widespread haze. Partly cloudy, with a low around 72. South southeast wind 5 to 10 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Widespread haze. Partly sunny, with a high near 94.
Wednesday Night
Widespread haze. Mostly cloudy, with a low around 73.
Thursday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Thursday Night
Partly cloudy, with a low around 74.
Independence Day
Mostly sunny, with a high near 95.
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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 CDT Jun 28, 2025
Forecast Valid:
3am CDT Jun 28, 2025-6pm CDT Jul 4, 2025
 
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