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

65°F

18°C

Humidity 78%
Wind Speed S 7 mph
Barometer 30.08 in (1018.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Feb 10:56 pm CST
Extended Forecast for

3 Miles NNW Luling TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. South wind around 5 mph becoming calm after midnight.

    Low: 60 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 82. Light south wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 82 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 50 percent chance of showers after midnight. Mostly cloudy, with a low around 63. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after noon. High near 76. South southeast wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    High: 76 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly clear, with a low around 55. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 46. North wind 5 to 10 mph becoming light in the evening.

    Low: 46 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 78. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50. South wind around 5 mph.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 60. South wind around 5 mph becoming calm after midnight.
Friday
Mostly cloudy, with a high near 82. Light south wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
A 50 percent chance of showers after midnight. Mostly cloudy, with a low around 63. South southeast wind 10 to 15 mph, with gusts as high as 20 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers, with thunderstorms also possible after noon. High near 76. South southeast wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly clear, with a low around 55. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday
Sunny, with a high near 75. North northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 46. North wind 5 to 10 mph becoming light in the evening.
Washington's Birthday
Sunny, with a high near 78. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 50. South wind around 5 mph.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 85.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Luling TX
 29.73°N 97.65°W (Elev. 446 ft)
Last Update:
10:32 pm CST Feb 12, 2026
Forecast Valid:
11pm CST Feb 12, 2026-6pm CST Feb 19, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation