In September, Red Deer typically sees daytime highs of 16.7°C and overnight lows around 3.0°C. Compared to the annual average high of 8.6°C, September runs +8.1°C.
September in Red Deer averages a daytime high of 16.7°C and an overnight low of 3.0°C.
September runs +8.1°C compared to Red Deer's annual average high of 8.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 16.7°C and cooler evenings around 3.0°C.