Weather in Iowa City in September
Iowa City, United States averages a high of 24.1°C (75.4°F) and low of 14.5°C (58.1°F) in September, with 7 rain days and 10 hours of daily sunshine. Travel score: 86/100 (Excellent). The best time to visit Iowa City is September.
High
24°C75°F
Low
15°C58°F
🌧️
7
rain days
☀️
10
hrs/day sunshine
💧
69%
humidity
86— Excellent
September in Iowa City is warm and mostly dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in Iowa City?
How much does it rain in Iowa City in September?
Iowa City receives an average of 84mm of rainfall across 7 rainy days in September. The annual total is 915.4mm.
What should I pack for Iowa City in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 24°C
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
🎉Visiting United States in September?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31