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.

Mostly Cloudy

83°F

28°C

Humidity 59%
Wind Speed SE 18 mph
Barometer 29.90 in (1011.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 3 Apr 3:56 pm CDT
Extended Forecast for

7 Miles NNE Luling TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88. South southeast wind around 20 mph, with gusts as high as 25 mph.

    High: 88 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 81. South southeast wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers after 1am. Mostly cloudy, with a low around 54. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 66. North northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 66 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly before 1am. Cloudy, with a low around 53. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 71. North northeast wind 5 to 10 mph.

    High: 71 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 49. East northeast wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 69. Northeast wind around 5 mph.

    High: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88. South southeast wind around 20 mph, with gusts as high as 25 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71. South southeast wind 10 to 15 mph, with gusts as high as 30 mph.
Saturday
Showers and possibly a thunderstorm. High near 81. South southeast wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers after 1am. Mostly cloudy, with a low around 54. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 66. North northeast wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A 30 percent chance of showers, mainly before 1am. Cloudy, with a low around 53. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly cloudy, with a high near 71. North northeast wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 49. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 69. Northeast wind around 5 mph.
Tuesday Night
Mostly cloudy, with a low around 51.
Wednesday
Mostly sunny, with a high near 79.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Thursday Night
Mostly cloudy, with a low around 64.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 83.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles NNE Luling TX
 29.77°N 97.6°W (Elev. 397 ft)
Last Update:
2:44 pm CDT Apr 3, 2026
Forecast Valid:
4pm CDT Apr 3, 2026-6pm CDT Apr 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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