In August, San Tan Valley typically sees daytime highs of 39.2°C and overnight lows around 23.5°C. Compared to the annual average high of 29.7°C, August runs +9.5°C.
August in San Tan Valley averages a daytime high of 39.2°C and an overnight low of 23.5°C.
August runs +9.5°C compared to San Tan Valley's annual average high of 29.7°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 39.2°C and cooler evenings around 23.5°C.