In September, Monza typically sees daytime highs of 23.0°C and overnight lows around 13.7°C. Compared to the annual average high of 16.9°C, September runs +6.1°C.
September in Monza averages a daytime high of 23.0°C and an overnight low of 13.7°C.
September runs +6.1°C compared to Monza's annual average high of 16.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 23.0°C and cooler evenings around 13.7°C.