In May, Gilroy typically sees daytime highs of 22.8°C and overnight lows around 7.8°C. Compared to the annual average high of 21.3°C, May runs +1.5°C.
May in Gilroy averages a daytime high of 22.8°C and an overnight low of 7.8°C.
May runs +1.5°C compared to Gilroy's annual average high of 21.3°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 22.8°C and cooler evenings around 7.8°C.