In July, Iowa City typically sees daytime highs of 29.6°C and overnight lows around 17.3°C. Compared to the annual average high of 15.4°C, July runs +14.2°C.
July in Iowa City averages a daytime high of 29.6°C and an overnight low of 17.3°C.
July runs +14.2°C compared to Iowa City's annual average high of 15.4°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 29.6°C and cooler evenings around 17.3°C.