In September, Welland typically sees daytime highs of 22.0°C and overnight lows around 12.5°C. Compared to the annual average high of 13.2°C, September runs +8.8°C.
September in Welland averages a daytime high of 22.0°C and an overnight low of 12.5°C.
September runs +8.8°C compared to Welland's annual average high of 13.2°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 22.0°C and cooler evenings around 12.5°C.