In May, Pontiac typically sees daytime highs of 20.3°C and overnight lows around 7.6°C. Compared to the annual average high of 13.9°C, May runs +6.4°C.
May in Pontiac averages a daytime high of 20.3°C and an overnight low of 7.6°C.
May runs +6.4°C compared to Pontiac's annual average high of 13.9°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 20.3°C and cooler evenings around 7.6°C.