Average humidity in San Marcos (TX)

On this page you find more information about the monthly relative humidity over the year in San Marcos (Texas), the United States of America.

San Marcos's humidity levels vary throughout the year. The highest levels occur in May, reaching 71% (high), while the lowest is recorded in March at 64%.

Throughout the year, the average humidity in San Marcos is 67%.

Humidity plays an important role in how temperatures are felt. During the warmest month, August, the maximum average temperature is around 37°C (99°F). Combined with high humidity during this period, the temperature can feel even warmer than the thermometer shows.

During the coldest month, January, the maximum average temperature is around 17°C (63°F). This period has high humidity. Check out our detailed temperature page for more information.