In May, Plano typically sees daytime highs of 28.2°C and overnight lows around 16.6°C. Compared to the annual average high of 24.4°C, May runs +3.8°C.
May in Plano averages a daytime high of 28.2°C and an overnight low of 16.6°C.
May runs +3.8°C compared to Plano's annual average high of 24.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 28.2°C and cooler evenings around 16.6°C.