In May, Bellevue typically sees daytime highs of 23.6°C and overnight lows around 10.5°C. Compared to the annual average high of 16.7°C, May runs +7.0°C.
May in Bellevue averages a daytime high of 23.6°C and an overnight low of 10.5°C.
May runs +7.0°C compared to Bellevue's annual average high of 16.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 23.6°C and cooler evenings around 10.5°C.