In May, Spokane Valley typically sees daytime highs of 18.7°C and overnight lows around 5.2°C. Compared to the annual average high of 13.8°C, May runs +4.9°C.
May in Spokane Valley averages a daytime high of 18.7°C and an overnight low of 5.2°C.
May runs +4.9°C compared to Spokane Valley's annual average high of 13.8°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.7°C and cooler evenings around 5.2°C.