In September, North Charleston typically sees daytime highs of 28.8°C and overnight lows around 19.8°C. Compared to the annual average high of 23.5°C, September runs +5.3°C.
September in North Charleston averages a daytime high of 28.8°C and an overnight low of 19.8°C.
September runs +5.3°C compared to North Charleston's annual average high of 23.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 28.8°C and cooler evenings around 19.8°C.