In September, Derby typically sees daytime highs of 17.5°C and overnight lows around 9.2°C. Compared to the annual average high of 12.9°C, September runs +4.6°C.
September in Derby averages a daytime high of 17.5°C and an overnight low of 9.2°C.
September runs +4.6°C compared to Derby's annual average high of 12.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 17.5°C and cooler evenings around 9.2°C.