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.

Mostly Cloudy with Haze

73°F

23°C

Humidity 71%
Wind Speed N 6 mph
Barometer 29.91 in (1012.4 mb)
Dewpoint 63°F (17°C)
Visibility 3.00 mi
Last update 9 Jan 4:56 pm CST
Detailed forecast for

Hays County

Tonight
Mostly cloudy this evening, then clearing. Cooler with lows in the lower 40s. North winds 5 to 10 mph with gusts up to 20 mph, increasing to 15 to 20 mph with gusts up to 35 mph after midnight.
Saturday
Mostly sunny and breezy, cooler with highs in the upper 50s. North winds 15 to 25 mph with gusts up to 40 mph.
Saturday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 30s. North winds 5 to 10 mph. Gusts up to 25 mph in the evening.
Sunday
Mostly cloudy. Highs around 60. North winds 5 to 10 mph with gusts up to 20 mph.
Sunday Night
Mostly cloudy. Lows in the upper 30s. North winds around 5 mph.
Monday And Monday Night
Mostly cloudy. Highs in the lower 60s. Lows in the lower 40s.
Tuesday
Mostly cloudy in the morning, then becoming partly cloudy. Highs in the lower 60s.
Tuesday Night Through Wednesday Night
Clear. Lows in the lower 40s. Highs in the lower 70s.
Thursday And Thursday Night
Clear. Highs in the mid 60s. Lows around 40.
Friday
Mostly sunny in the morning, then becoming partly cloudy. Highs in the upper 60s.



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402 PM CST Fri Jan 9 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database