In July, Ottawa typically sees daytime highs of 26.3°C and overnight lows around 13.8°C. Compared to the annual average high of 11.1°C, July runs +15.3°C.
July in Ottawa averages a daytime high of 26.3°C and an overnight low of 13.8°C.
July runs +15.3°C compared to Ottawa's annual average high of 11.1°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 26.3°C and cooler evenings around 13.8°C.