In June, Montreal typically sees daytime highs of 23.5°C and overnight lows around 12.2°C. Compared to the annual average high of 10.8°C, June runs +12.7°C.
June in Montreal averages a daytime high of 23.5°C and an overnight low of 12.2°C.
June runs +12.7°C compared to Montreal's annual average high of 10.8°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 23.5°C and cooler evenings around 12.2°C.