In September, Ames typically sees daytime highs of 24.1°C and overnight lows around 10.6°C. Compared to the annual average high of 14.8°C, September runs +9.3°C.
September in Ames averages a daytime high of 24.1°C and an overnight low of 10.6°C.
September runs +9.3°C compared to Ames's annual average high of 14.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.1°C and cooler evenings around 10.6°C.