In September, Cleveland typically sees daytime highs of 23.6°C and overnight lows around 12.0°C. Compared to the annual average high of 14.9°C, September runs +8.7°C.
September in Cleveland averages a daytime high of 23.6°C and an overnight low of 12.0°C.
September runs +8.7°C compared to Cleveland's annual average high of 14.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 23.6°C and cooler evenings around 12.0°C.