In May, Olympia typically sees daytime highs of 18.9°C and overnight lows around 6.2°C. Compared to the annual average high of 15.7°C, May runs +3.2°C.
May in Olympia averages a daytime high of 18.9°C and an overnight low of 6.2°C.
May runs +3.2°C compared to Olympia's annual average high of 15.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.9°C and cooler evenings around 6.2°C.