In May, Decatur typically sees daytime highs of 23.6°C and overnight lows around 10.7°C. Compared to the annual average high of 17.2°C, May runs +6.5°C.
May in Decatur averages a daytime high of 23.6°C and an overnight low of 10.7°C.
May runs +6.5°C compared to Decatur's annual average high of 17.2°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 23.6°C and cooler evenings around 10.7°C.