In September, Gastonia typically sees daytime highs of 27.7°C and overnight lows around 15.7°C. Compared to the annual average high of 21.5°C, September runs +6.2°C.
September in Gastonia averages a daytime high of 27.7°C and an overnight low of 15.7°C.
September runs +6.2°C compared to Gastonia's annual average high of 21.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 27.7°C and cooler evenings around 15.7°C.