In May, Ann Arbor typically sees daytime highs of 20.8°C and overnight lows around 7.5°C. Compared to the annual average high of 14.4°C, May runs +6.4°C.
May in Ann Arbor averages a daytime high of 20.8°C and an overnight low of 7.5°C.
May runs +6.4°C compared to Ann Arbor's annual average high of 14.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 20.8°C and cooler evenings around 7.5°C.