In September, Tinley Park typically sees daytime highs of 24.5°C and overnight lows around 12.5°C. Compared to the annual average high of 15.2°C, September runs +9.2°C.
September in Tinley Park averages a daytime high of 24.5°C and an overnight low of 12.5°C.
September runs +9.2°C compared to Tinley Park's annual average high of 15.2°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.5°C and cooler evenings around 12.5°C.