In May, Santa Rosa typically sees daytime highs of 33.8°C and overnight lows around 24.6°C. Compared to the annual average high of 31.2°C, May runs +2.6°C.
May in Santa Rosa averages a daytime high of 33.8°C and an overnight low of 24.6°C.
May runs +2.6°C compared to Santa Rosa's annual average high of 31.2°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 33.8°C and cooler evenings around 24.6°C.