In September, Youngstown typically sees daytime highs of 24.2°C and overnight lows around 10.8°C. Compared to the annual average high of 15.6°C, September runs +8.6°C.
September in Youngstown averages a daytime high of 24.2°C and an overnight low of 10.8°C.
September runs +8.6°C compared to Youngstown's annual average high of 15.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.2°C and cooler evenings around 10.8°C.