The highest day temperature in June 2026 was 100°F. The lowest night temperature was 55°F. The average values for day and night temperatures during June were 83.2°F и 66.6°F respectivly.

Most of the days in June are sunny but you can also expect cloudy and gloomy days.

Precipitation total in June for Iowa City is 1.8 in. It makes june the most rainy month of the year.

The average wind speed in June is 8.7 mph. It makes June one of the most windless months of the year for Iowa City.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Iowa City in June is 9.5 hours.