In May, Lancaster typically sees daytime highs of 25.6°C and overnight lows around 9.6°C. Compared to the annual average high of 23.9°C, May runs +1.8°C.
May in Lancaster averages a daytime high of 25.6°C and an overnight low of 9.6°C.
May runs +1.8°C compared to Lancaster's annual average high of 23.9°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 25.6°C and cooler evenings around 9.6°C.