In June, San Marcos typically sees daytime highs of 25.1°C and overnight lows around 12.9°C. Compared to the annual average high of 23.0°C, June runs +2.1°C.
June in San Marcos averages a daytime high of 25.1°C and an overnight low of 12.9°C.
June runs +2.1°C compared to San Marcos's annual average high of 23.0°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 25.1°C and cooler evenings around 12.9°C.