In September, New Rochelle typically sees daytime highs of 24.0°C and overnight lows around 13.9°C. Compared to the annual average high of 16.1°C, September runs +7.9°C.
September in New Rochelle averages a daytime high of 24.0°C and an overnight low of 13.9°C.
September runs +7.9°C compared to New Rochelle's annual average high of 16.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.0°C and cooler evenings around 13.9°C.