March in Iowa City averages a daily high of 9.4°C with nights around -1.8°C. Expect roughly 9.1 wet days totalling 54mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Iowa City is August–October.
Based on IOWA CITY MUNICIPAL AIRPORT, IA US (2.7km), 1995–2024. 29 years of March data.