Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

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

Overcast

68°F

20°C

Humidity 93%
Wind Speed Calm
Barometer 30.17 in (1021.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 28 Oct 8:56 am CDT
Detailed forecast for

Caldwell County

Today
Mostly cloudy. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. Highs in the mid 80s. Southeast winds 5 to 10 mph. Chance of rain 40 percent.
Tonight
Mostly cloudy. Lows in the mid 60s. Southeast winds 5 to 10 mph.
Thursday
Mostly cloudy. A slight chance of showers in the afternoon. Highs in the lower 80s. East winds 5 to 10 mph.
Thursday Night
Mostly cloudy. Lows in the lower 60s. Southeast winds around 5 mph.
Friday
Mostly cloudy. A slight chance of showers in the morning. Highs around 80. East winds 5 to 10 mph.
Friday Night And Saturday
Mostly cloudy. Lows in the lower 60s. Highs in the mid 80s.
Saturday Night
Partly cloudy. Lows in the lower 60s.
Sunday
Mostly cloudy. Highs in the mid 80s.
Sunday Night
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s.
Monday
Mostly cloudy in the morning, then partly cloudy with a slight chance of showers in the afternoon. Highs in the mid 80s.
Monday Night
Partly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 40 percent.
Tuesday
Partly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 80s. Chance of rain 30 percent.



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459 AM CDT Wed Oct 28 2026
 
 

Additional Resources

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Hourly Weather Forecast

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