In May, Toronto typically sees daytime highs of 17.4°C and overnight lows around 7.3°C. Compared to the annual average high of 12.3°C, May runs +5.0°C.
May in Toronto averages a daytime high of 17.4°C and an overnight low of 7.3°C.
May runs +5.0°C compared to Toronto's annual average high of 12.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 17.4°C and cooler evenings around 7.3°C.