In July, Charleston typically sees daytime highs of 31.4°C and overnight lows around 22.2°C. Compared to the annual average high of 23.5°C, July runs +7.9°C.
July in Charleston averages a daytime high of 31.4°C and an overnight low of 22.2°C.
July runs +7.9°C compared to Charleston's annual average high of 23.5°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 31.4°C and cooler evenings around 22.2°C.