In May, Folsom typically sees daytime highs of 26.3°C and overnight lows around 10.3°C. Compared to the annual average high of 23.3°C, May runs +3.0°C.
May in Folsom averages a daytime high of 26.3°C and an overnight low of 10.3°C.
May runs +3.0°C compared to Folsom's annual average high of 23.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 26.3°C and cooler evenings around 10.3°C.