In May, Santa Rosa typically sees daytime highs of 22.5°C and overnight lows around 12.5°C. Compared to the annual average high of 25.7°C, May runs -3.3°C.
May in Santa Rosa averages a daytime high of 22.5°C and an overnight low of 12.5°C.
May runs -3.3°C compared to Santa Rosa's annual average high of 25.7°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 22.5°C and cooler evenings around 12.5°C.