In July, Ontario typically sees daytime highs of 31.6°C and overnight lows around 15.2°C. Compared to the annual average high of 23.1°C, July runs +8.5°C.
July in Ontario averages a daytime high of 31.6°C and an overnight low of 15.2°C.
July runs +8.5°C compared to Ontario's annual average high of 23.1°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 31.6°C and cooler evenings around 15.2°C.