In May, Hartford typically sees daytime highs of 21.6°C and overnight lows around 7.5°C. Compared to the annual average high of 15.7°C, May runs +5.9°C.
May in Hartford averages a daytime high of 21.6°C and an overnight low of 7.5°C.
May runs +5.9°C compared to Hartford's annual average high of 15.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 21.6°C and cooler evenings around 7.5°C.