In September, Moncton typically sees daytime highs of 18.9°C and overnight lows around 7.2°C. Compared to the annual average high of 10.5°C, September runs +8.4°C.
September in Moncton averages a daytime high of 18.9°C and an overnight low of 7.2°C.
September runs +8.4°C compared to Moncton's annual average high of 10.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 18.9°C and cooler evenings around 7.2°C.