In May, Kennewick typically sees daytime highs of 23.2°C and overnight lows around 7.8°C. Compared to the annual average high of 17.9°C, May runs +5.3°C.
May in Kennewick averages a daytime high of 23.2°C and an overnight low of 7.8°C.
May runs +5.3°C compared to Kennewick's annual average high of 17.9°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 23.2°C and cooler evenings around 7.8°C.