In September, Millcreek typically sees daytime highs of 25.7°C and overnight lows around 9.2°C. Compared to the annual average high of 17.0°C, September runs +8.7°C.
September in Millcreek averages a daytime high of 25.7°C and an overnight low of 9.2°C.
September runs +8.7°C compared to Millcreek's annual average high of 17.0°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 25.7°C and cooler evenings around 9.2°C.