In October, Iowa City typically sees daytime highs of 18.3°C and overnight lows around 5.1°C. Compared to the annual average high of 15.4°C, October runs +2.9°C.
October in Iowa City averages a daytime high of 18.3°C and an overnight low of 5.1°C.
October runs +2.9°C compared to Iowa City's annual average high of 15.4°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 18.3°C and cooler evenings around 5.1°C.