In September, Dormagen typically sees daytime highs of 19.5°C and overnight lows around 10.5°C. Compared to the annual average high of 13.9°C, September runs +5.6°C.
September in Dormagen averages a daytime high of 19.5°C and an overnight low of 10.5°C.
September runs +5.6°C compared to Dormagen's annual average high of 13.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 19.5°C and cooler evenings around 10.5°C.