In May, Chatham typically sees daytime highs of 15.9°C and overnight lows around 7.9°C. Compared to the annual average high of 13.3°C, May runs +2.6°C.
May in Chatham averages a daytime high of 15.9°C and an overnight low of 7.9°C.
May runs +2.6°C compared to Chatham's annual average high of 13.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 15.9°C and cooler evenings around 7.9°C.