In May, Grand Forks typically sees daytime highs of 20.2°C and overnight lows around 5.5°C. Compared to the annual average high of 10.3°C, May runs +9.8°C.
May in Grand Forks averages a daytime high of 20.2°C and an overnight low of 5.5°C.
May runs +9.8°C compared to Grand Forks's annual average high of 10.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 20.2°C and cooler evenings around 5.5°C.