In September, South Bend typically sees daytime highs of 24.1°C and overnight lows around 11.7°C. Compared to the annual average high of 15.1°C, September runs +9.0°C.
September in South Bend averages a daytime high of 24.1°C and an overnight low of 11.7°C.
September runs +9.0°C compared to South Bend's annual average high of 15.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.1°C and cooler evenings around 11.7°C.