In May, Cheyenne typically sees daytime highs of 18.2°C and overnight lows around 3.3°C. Compared to the annual average high of 14.6°C, May runs +3.6°C.
May in Cheyenne averages a daytime high of 18.2°C and an overnight low of 3.3°C.
May runs +3.6°C compared to Cheyenne's annual average high of 14.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.2°C and cooler evenings around 3.3°C.