Last updated: June 24, 2025
In July, the average temperature in Iowa City, United States hovers around 25°C (77°F), offering a pleasant climate. However, be prepared for a range of temperatures, with minimums dipping to 12°C (54°F) and maximums soaring to 36°C (97°F). The month records about 79 mm (3.1 in) of precipitation spread over 10 days, contributing to an average humidity of 79%, making for a vibrant and lush atmosphere.
In July in Iowa City, the average temperature is 25°C (77°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop to as low as 12°C (54°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities, but it's advisable to pack layers to stay comfortable throughout the day.
In Iowa City in July, the precipitation amount is 79 mm (3.1 in) over a span of 10 days.
In Iowa City in July, humidity is 79%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly sluggish but pleasantly tropical.
In Iowa City in July, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Iowa City.
UV Risk Categories
Weather in Iowa City varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Iowa City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 48 mm (1.9 inches) | 81% | moderate |
| February Weather | -4°C (24°F) | 58 mm (2.3 inches) | 81% | moderate |
| March Weather | 4°C (39°F) | 80 mm (3.2 inches) | 81% | high |
| April Weather | 9°C (49°F) | 84 mm (3.3 inches) | 82% | very high |
| May Weather | 17°C (62°F) | 139 mm (5.5 inches) | 78% | very high |
| June Weather | 23°C (74°F) | 128 mm (5.0 inches) | 81% | extreme |
| July Weather | 25°C (77°F) | 79 mm (3.1 inches) | 79% | very high |
| August Weather | 23°C (73°F) | 83 mm (3.3 inches) | 77% | very high |
| September Weather | 20°C (68°F) | 130 mm (5.1 inches) | 78% | very high |
| October Weather | 12°C (53°F) | 135 mm (5.3 inches) | 78% | high |
| November Weather | 3°C (38°F) | 50 mm (2.0 inches) | 87% | moderate |
| December Weather | -1°C (31°F) | 46 mm (1.8 inches) | 84% | moderate |