In May, Phoenix typically sees daytime highs of 34.1°C and overnight lows around 15.7°C. Compared to the annual average high of 30.0°C, May runs +4.1°C.
May in Phoenix averages a daytime high of 34.1°C and an overnight low of 15.7°C.
May runs +4.1°C compared to Phoenix's annual average high of 30.0°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 34.1°C and cooler evenings around 15.7°C.