In June, San Marcos typically sees daytime highs of 29.3°C and overnight lows around 20.6°C. Compared to the annual average high of 30.2°C, June runs -0.9°C.
June in San Marcos averages a daytime high of 29.3°C and an overnight low of 20.6°C.
June runs -0.9°C compared to San Marcos's annual average high of 30.2°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 29.3°C and cooler evenings around 20.6°C.