In September, Johns Creek typically sees daytime highs of 27.8°C and overnight lows around 16.1°C. Compared to the annual average high of 21.5°C, September runs +6.2°C.
September in Johns Creek averages a daytime high of 27.8°C and an overnight low of 16.1°C.
September runs +6.2°C compared to Johns Creek's annual average high of 21.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 27.8°C and cooler evenings around 16.1°C.