Last updated: June 24, 2025
In August, the average temperature in Iowa City, United States is a pleasant 23°C (73°F). However, be prepared for a range, as temperatures can dip to a minimum of 11°C (52°F) and soar up to a maximum of 35°C (95°F). Expect about 83 mm (3.3 in) of precipitation over the month, typically spread across 8 days. With an average humidity of 77%, it’s wise to stay hydrated and enjoy the tropical vibes!
In August in Iowa City, the average temperature is 23°C (73°F). Maximums can reach 35°C (95°F) and minimums can be as low as 11°C (52°F). This mild climate makes Iowa City an ideal destination for travelers seeking pleasant weather.
In Iowa City in August, the precipitation amount reaches 83 mm (3.3 in) over the course of 8 days.
In Iowa City in August, humidity is 77%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable but bearable. It's essential to stay hydrated and take frequent breaks to enjoy the sights while avoiding overheating.
In Iowa City in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 August’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 |