In May, Granby typically sees daytime highs of 18.2°C and overnight lows around 5.8°C. Compared to the annual average high of 10.7°C, May runs +7.5°C.
May in Granby averages a daytime high of 18.2°C and an overnight low of 5.8°C.
May runs +7.5°C compared to Granby's annual average high of 10.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.2°C and cooler evenings around 5.8°C.