Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Watches and Warnings have been issued for Hurricane Jose and Major Hurricane Maria

Hurricane Jose is producing life-threatening surf and rip currents and possible heavy rainfall along portions of the East Coast. A Tropical Storm Watch and Warning are in effect from Fire Island Inlet, NY to north to Hull, MA. Maria is a major hurricane. Puerto Rico and the US Virgin Islands are under a Hurricane Warning and will begin receiving impacts by Tuesday night. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

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

Fair

85°F

29°C

Humidity 68%
Wind Speed SE 9 mph
Barometer 29.85 in (1009.8 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 19 Sep 7:56 pm CDT
Detailed forecast for

Caldwell County

Rest Of Tonight
Partly cloudy until early morning then becoming mostly cloudy. Lows in the mid 70s. South winds 10 to 15 mph.
Wednesday
Mostly cloudy in the morning then becoming partly cloudy. Highs in the lower 90s. South winds 5 to 10 mph. Highest heat index readings around 105.
Wednesday Night
Partly cloudy. Lows in the mid 70s. South winds 5 to 10 mph.
Thursday
Mostly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 90s. Southeast winds 5 to 10 mph.
Thursday Night
Partly cloudy. Lows in the lower 70s. Southeast winds 5 to 10 mph.
Friday
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs around 90.
Friday Night
Partly cloudy. Lows around 70.
Saturday
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs around 90.
Saturday Night
Partly cloudy. Lows around 70.
Sunday
Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the upper 80s.
Sunday Night
Partly cloudy. Lows around 70.
Monday
Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the upper 80s.
Monday Night
Partly cloudy. Lows around 70.
Tuesday
Mostly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the upper 80s.



Click Map For Forecast
712 PM CDT Tue Sep 19 2017
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database