In April, Iowa City typically sees daytime highs of 16.4°C and overnight lows around 3.7°C. Compared to the annual average high of 15.4°C, April runs +1.0°C.
April in Iowa City averages a daytime high of 16.4°C and an overnight low of 3.7°C.
April runs +1.0°C compared to Iowa City's annual average high of 15.4°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 16.4°C and cooler evenings around 3.7°C.