In May, Grand Junction typically sees daytime highs of 24.4°C and overnight lows around 8.2°C. Compared to the annual average high of 18.9°C, May runs +5.5°C.
May in Grand Junction averages a daytime high of 24.4°C and an overnight low of 8.2°C.
May runs +5.5°C compared to Grand Junction's annual average high of 18.9°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 24.4°C and cooler evenings around 8.2°C.