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

67°F

19°C

Humidity 71%
Wind Speed N 7 mph
Barometer 29.99 in (1014.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 6 Oct 11:56 pm CDT
Extended Forecast for

8 Miles NNE Luling TX

  • Overnight

    Overnight: Clear, with a low around 65. Calm wind becoming north around 5 mph.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. North northeast wind around 5 mph.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65. Northeast wind around 5 mph becoming calm.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 90. North wind around 5 mph.

    High: 90 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 67. Northeast wind around 5 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. Northeast wind 5 to 10 mph.

    High: 89 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. East northeast wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. North wind around 5 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 64. East northeast wind around 5 mph becoming calm.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 65. Calm wind becoming north around 5 mph.
Wednesday
Sunny, with a high near 90. North northeast wind around 5 mph.
Wednesday Night
Clear, with a low around 65. Northeast wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 90. North wind around 5 mph.
Thursday Night
Mostly clear, with a low around 67. Northeast wind around 5 mph becoming calm in the evening.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 89. Northeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 65. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 88. North wind around 5 mph.
Saturday Night
Mostly clear, with a low around 64. East northeast wind around 5 mph becoming calm.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 69.
Columbus Day
A 30 percent chance of showers. Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles NNE Luling TX
 29.77°N 97.6°W (Elev. 397 ft)
Last Update:
12:42 am CDT Oct 7, 2026
Forecast Valid:
12am CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation