The highest day temperature in July 2025 was 101°F. The lowest night temperature was 59°F. The average values for day and night temperatures during July were 89.1°F и 70.5°F respectivly.

Most of the days in July are cloudy but you can also expect sunny or gloomy days.

Precipitation total in July for Iowa City is 0.9 in.

The average wind speed in July is 7.1 mph. It makes July the most windless month 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 July is 8.4 hours.