In May, Watsonville typically sees daytime highs of 20.5°C and overnight lows around 9.0°C. Compared to the annual average high of 20.1°C, May runs +0.3°C.
May in Watsonville averages a daytime high of 20.5°C and an overnight low of 9.0°C.
May runs +0.3°C compared to Watsonville's annual average high of 20.1°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 20.5°C and cooler evenings around 9.0°C.