In May, Richardson typically sees daytime highs of 28.4°C and overnight lows around 16.8°C. Compared to the annual average high of 24.7°C, May runs +3.7°C.
May in Richardson averages a daytime high of 28.4°C and an overnight low of 16.8°C.
May runs +3.7°C compared to Richardson's annual average high of 24.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 28.4°C and cooler evenings around 16.8°C.