In July, Guelph typically sees daytime highs of 25.5°C and overnight lows around 13.1°C. Compared to the annual average high of 11.3°C, July runs +14.2°C.
July in Guelph averages a daytime high of 25.5°C and an overnight low of 13.1°C.
July runs +14.2°C compared to Guelph's annual average high of 11.3°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 25.5°C and cooler evenings around 13.1°C.