In May, Bellingham typically sees daytime highs of 17.6°C and overnight lows around 7.1°C. Compared to the annual average high of 14.3°C, May runs +3.3°C.
May in Bellingham averages a daytime high of 17.6°C and an overnight low of 7.1°C.
May runs +3.3°C compared to Bellingham's annual average high of 14.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 17.6°C and cooler evenings around 7.1°C.