In September, Sherbrooke typically sees daytime highs of 19.0°C and overnight lows around 7.7°C. Compared to the annual average high of 10.4°C, September runs +8.6°C.
September in Sherbrooke averages a daytime high of 19.0°C and an overnight low of 7.7°C.
September runs +8.6°C compared to Sherbrooke's annual average high of 10.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 19.0°C and cooler evenings around 7.7°C.