In September, Chalons-en-Champagne typically sees daytime highs of 20.4°C and overnight lows around 9.5°C. Compared to the annual average high of 14.5°C, September runs +6.0°C.
September in Chalons-en-Champagne averages a daytime high of 20.4°C and an overnight low of 9.5°C.
September runs +6.0°C compared to Chalons-en-Champagne's annual average high of 14.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 20.4°C and cooler evenings around 9.5°C.