In May, Palo Alto typically sees daytime highs of 20.4°C and overnight lows around 8.9°C. Compared to the annual average high of 19.2°C, May runs +1.2°C.
May in Palo Alto averages a daytime high of 20.4°C and an overnight low of 8.9°C.
May runs +1.2°C compared to Palo Alto's annual average high of 19.2°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 20.4°C and cooler evenings around 8.9°C.