In May, Welland typically sees daytime highs of 18.3°C and overnight lows around 8.0°C. Compared to the annual average high of 13.2°C, May runs +5.1°C.
May in Welland averages a daytime high of 18.3°C and an overnight low of 8.0°C.
May runs +5.1°C compared to Welland's annual average high of 13.2°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.3°C and cooler evenings around 8.0°C.