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

79°F

26°C

Humidity 32%
Wind Speed N 6 mph
Barometer 30.06 in (1017.2 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 12 Nov 1:56 pm CST
Extended Forecast for

7 Miles NNE Luling TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. North northeast wind around 5 mph becoming calm.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 49. Calm wind.

    Low: 49 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 77. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 77 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49. East southeast wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Partly sunny, with a high near 70. Northeast wind 5 to 15 mph becoming east southeast in the afternoon. Winds could gust as high as 25 mph.

    High: 70 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 54. East southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, then showers after noon. High near 69. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

    High: 69 °F

    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 51. North northeast wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 51 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 60. North northeast wind around 15 mph, with gusts as high as 30 mph.

    High: 60 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 77. North northeast wind around 5 mph becoming calm.
Tonight
Clear, with a low around 49. Calm wind.
Friday
Sunny, with a high near 77. Calm wind becoming east southeast around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 49. East southeast wind around 5 mph becoming calm in the evening.
Saturday
A 20 percent chance of showers after noon. Partly sunny, with a high near 70. Northeast wind 5 to 15 mph becoming east southeast in the afternoon. Winds could gust as high as 25 mph.
Saturday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 54. East southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm, then showers after noon. High near 69. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Sunday Night
A 30 percent chance of showers, mainly before midnight. Mostly cloudy, with a low around 51. North northeast wind 10 to 20 mph, with gusts as high as 30 mph.
Monday
Mostly cloudy, with a high near 60. North northeast wind around 15 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 49.
Tuesday
Partly sunny, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
A 20 percent chance of showers. Partly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NNE Luling TX
 29.79°N 97.6°W (Elev. 449 ft)
Last Update:
1:46 pm CST Nov 12, 2026
Forecast Valid:
2pm CST Nov 12, 2026-6pm CST Nov 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation