In May, Surprise typically sees daytime highs of 33.6°C and overnight lows around 15.6°C. Compared to the annual average high of 29.7°C, May runs +3.9°C.
May in Surprise averages a daytime high of 33.6°C and an overnight low of 15.6°C.
May runs +3.9°C compared to Surprise's annual average high of 29.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 33.6°C and cooler evenings around 15.6°C.