In August, Folsom typically sees daytime highs of 33.6°C and overnight lows around 15.1°C. Compared to the annual average high of 23.3°C, August runs +10.3°C.
August in Folsom averages a daytime high of 33.6°C and an overnight low of 15.1°C.
August runs +10.3°C compared to Folsom's annual average high of 23.3°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 33.6°C and cooler evenings around 15.1°C.