Weather in San Marcos, Texas
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 07:11 PM ET · Refreshes every hour
87°F
Partly cloudy
Feels like 92°F
51%
Humidity
5 mph
Wind Speed
About Weather in San Marcos
San Marcos is located in Texas (coordinates: 29.872399°N, 97.936022°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.