In September, Greater Sudbury typically sees daytime highs of 18.1°C and overnight lows around 7.0°C. Compared to the annual average high of 9.6°C, September runs +8.5°C.
September in Greater Sudbury averages a daytime high of 18.1°C and an overnight low of 7.0°C.
September runs +8.5°C compared to Greater Sudbury's annual average high of 9.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 7.0°C.