Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

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

A Few Clouds

60°F

16°C

Humidity 93%
Wind Speed NA
Barometer 29.77 in (1007.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 14 Feb 5:56 pm CST
Detailed forecast for

Hays County

Tonight
Mostly clear. Lows in the lower 50s. West winds 10 to 15 mph. Gusts up to 30 mph after midnight.
Sunday
Mostly sunny. Highs in the lower 70s. North winds 10 to 15 mph with gusts up to 30 mph.
Sunday Night
Mostly clear. Lows in the mid 40s. North winds around 5 mph.
Washingtons Birthday
Sunny. Highs in the mid 70s. East winds around 5 mph, becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear. Lows in the lower 50s. South winds 5 to 10 mph.
Tuesday And Tuesday Night
Partly cloudy. Highs in the lower 80s. Lows in the upper 50s.
Wednesday And Wednesday Night
Mostly cloudy. Highs in the lower 80s. Lows around 60.
Thursday And Thursday Night
Partly cloudy. Highs in the mid 80s. Lows in the upper 50s.
Friday And Friday Night
Partly cloudy. Highs in the upper 70s. Lows in the lower 50s.
Saturday
Partly cloudy. Highs in the lower 70s.



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548 PM 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