In May, Riverside typically sees daytime highs of 25.8°C and overnight lows around 10.4°C. Compared to the annual average high of 25.7°C, May runs +0.1°C.
May in Riverside averages a daytime high of 25.8°C and an overnight low of 10.4°C.
May runs +0.1°C compared to Riverside's annual average high of 25.7°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 25.8°C and cooler evenings around 10.4°C.