Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89° N Lon: 97.86° W Elev: 597 ft.

Overcast

67°F

19°C

Humidity 97%
Wind Speed S 15 mph
Barometer 29.88 in (1011.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 14 Feb 7:56 am CST
Detailed forecast for

Hays County

Today
Cloudy. Showers likely with a slight chance of thunderstorms this morning, then showers likely with a chance of thunderstorms this afternoon. Highs in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.
Tonight
Clear. A slight chance of showers and thunderstorms in the evening. Cooler. Less humid with lows in the mid 50s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
Sunday
Sunny. Highs in the lower 70s. North winds 10 to 15 mph with gusts up to 30 mph.
Sunday Night
Clear. Lows in the mid 40s. North winds around 5 mph.
Washingtons Birthday
Sunny. Highs in the upper 70s. East winds around 5 mph, becoming south around 5 mph in the afternoon.
Monday Night
Clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Tuesday And Tuesday Night
Partly cloudy. Highs in the lower 80s. Lows in the upper 50s.
Wednesday
Mostly cloudy in the morning, then becoming partly cloudy. Highs in the lower 80s.
Wednesday Night Through Thursday Night
Partly cloudy. Lows in the upper 50s. Highs in the lower 80s.
Friday
Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 70s.



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642 AM CST Sat Feb 14 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database