Storm Systems to Impact the Central and Eastern U.S. Through the Weekend

Two storm systems will track through the central and eastern U.S. today through this weekend with areas of gusty winds, rain and heavy snow. Severe thunderstorms and heavy to excessive rainfall is forecast today from the Lower Mississippi River Valley to the Tennessee Valley. Damaging winds, a few tornadoes, and areas of flooding are possible. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

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

Fair and Breezy

54°F

12°C

Humidity 57%
Wind Speed N 21 mph
Barometer 30.19 in (1022.0 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 10 Jan 3:56 am CST
Detailed forecast for

Hays County

Today
Partly cloudy and breezy, cooler with highs in the upper 50s. North winds 15 to 25 mph with gusts up to 40 mph.
Tonight
Partly cloudy. Lows in the mid 30s. North winds 10 to 15 mph with gusts up to 25 mph.
Sunday
Mostly cloudy. Highs in the lower 60s. North winds 5 to 10 mph with gusts up to 20 mph.
Sunday Night
Mostly cloudy. Lows in the upper 30s. Northwest winds around 5 mph.
Monday
Mostly cloudy. Highs in the lower 60s. North winds around 5 mph, becoming southeast in the afternoon.
Monday Night And Tuesday
Mostly cloudy. Lows in the lower 40s. Highs in the lower 60s.
Tuesday Night
Partly cloudy in the evening, then clearing. Lows in the lower 40s.
Wednesday And Wednesday Night
Clear. Highs in the lower 70s. Lows in the upper 30s.
Thursday And Thursday Night
Clear. Highs in the lower 60s. Lows in the upper 30s.
Friday
Mostly sunny. Highs in the upper 60s.



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353 AM CST Sat Jan 10 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database