In May, Mississauga typically sees daytime highs of 18.2°C and overnight lows around 6.8°C. Compared to the annual average high of 12.4°C, May runs +5.8°C.
May in Mississauga averages a daytime high of 18.2°C and an overnight low of 6.8°C.
May runs +5.8°C compared to Mississauga's annual average high of 12.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.2°C and cooler evenings around 6.8°C.