In September, Winnipeg typically sees daytime highs of 18.4°C and overnight lows around 5.7°C. Compared to the annual average high of 7.9°C, September runs +10.5°C.
September in Winnipeg averages a daytime high of 18.4°C and an overnight low of 5.7°C.
September runs +10.5°C compared to Winnipeg's annual average high of 7.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 18.4°C and cooler evenings around 5.7°C.