In September, Wilmington typically sees daytime highs of 25.7°C and overnight lows around 14.4°C. Compared to the annual average high of 17.8°C, September runs +7.9°C.
September in Wilmington averages a daytime high of 25.7°C and an overnight low of 14.4°C.
September runs +7.9°C compared to Wilmington's annual average high of 17.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 25.7°C and cooler evenings around 14.4°C.