In September, Peoria typically sees daytime highs of 25.6°C and overnight lows around 12.5°C. Compared to the annual average high of 16.3°C, September runs +9.3°C.
September in Peoria averages a daytime high of 25.6°C and an overnight low of 12.5°C.
September runs +9.3°C compared to Peoria's annual average high of 16.3°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 25.6°C and cooler evenings around 12.5°C.