In September, Fort Myers typically sees daytime highs of 31.9°C and overnight lows around 23.0°C. Compared to the annual average high of 28.5°C, September runs +3.4°C.
September in Fort Myers averages a daytime high of 31.9°C and an overnight low of 23.0°C.
September runs +3.4°C compared to Fort Myers's annual average high of 28.5°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 31.9°C and cooler evenings around 23.0°C.