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

47°F

8°C

Humidity 46%
Wind Speed N 18 mph
Barometer 30.52 in (1033.2 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 22 Feb 2:56 am CST
Extended Forecast for

3 Miles NNW Luling TX

  • Overnight

    Overnight: Clear, with a low around 39. North wind around 15 mph, with gusts as high as 25 mph.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 64. North northeast wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34. North northeast wind 5 to 10 mph.

    Low: 34 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65. North wind around 5 mph becoming east southeast in the afternoon.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. East southeast wind around 5 mph becoming calm.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Light south southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 39. North wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 64. North northeast wind 10 to 20 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 34. North northeast wind 5 to 10 mph.
Monday
Sunny, with a high near 65. North wind around 5 mph becoming east southeast in the afternoon.
Monday Night
Mostly clear, with a low around 36. East southeast wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 75. Light south southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 54. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 86. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind around 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 83.
Thursday Night
Clear, with a low around 50.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 54.
Saturday
Mostly sunny, with a high near 86.
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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:
12:44 am CST Feb 22, 2026
Forecast Valid:
3am CST Feb 22, 2026-6pm CST Feb 28, 2026
 
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