Iowa City (IA)
September
Weather in Iowa City, Iowa for September 2027
Your guide to Iowa City weather in September - trends and predictions
In general, the average temperature in Iowa City at the beginning of September is 26.8 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 23.8 °C by the end of September.
Iowa City experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 248 mm.
Is September a good time to visit Iowa City? check out the best time to travel to Iowa City page.
✨ Is September a good time to visit Iowa City? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
26°/14°
Temperatures
17 km/h
Avg max wind
72 %
Avg humidity
Iowa City Weather September
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Temperatures trend during September in Iowa City
See the weather trend as well as the moving average line
September weather in Iowa City day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 29° /17° | 0 mm | 7 | |
| Sept. 2 | Sunny | 28° /15° | 0.1 mm | 5 | |
| Sept. 3 |  Moderate rain | 27° /15° | 10.4 mm | 6 | |
| Sept. 4 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 5 |  Partly cloudy | 29° /16° | 0 mm | 6 | |
| Sept. 6 |  Overcast | 23° /12° | 0.1 mm | 4 | |
| Sept. 7 | Sunny | 23° /10° | 0 mm | 4 | |
| Sept. 8 | Overcast | 27° /11° | 0 mm | 4 | |
| Sept. 9 |  Heavy rain | 27° /14° | 136.7 mm | 5 | |
| Sept. 10 | Sunny | 27° /15° | 0 mm | 6 | |
| Sept. 11 | Sunny | 29° /14° | 0 mm | 7 | |
| Sept. 12 | Sunny | 29° /15° | 0 mm | 7 | |
| Sept. 13 |  Patchy rain possible | 27° /17° | 1.7 mm | 5 | |
| Sept. 14 | Partly cloudy | 29° /16° | 0.8 mm | 6 | |
| Sept. 15 |  Light rain | 28° /19° | 9.4 mm | 5 | |
| Sept. 16 | Light rain | 27° /16° | 4.6 mm | 5 | |
| Sept. 17 | Light rain | 29° /16° | 6.3 mm | 6 | |
| Sept. 18 | Patchy rain possible | 27° /16° | 1.7 mm | 5 | |
| Sept. 19 | Moderate rain | 27° /18° | 24.5 mm | 4 | |
| Sept. 20 | Heavy rain | 22° /16° | 27.6 mm | 4 | |
| Sept. 21 | Patchy rain possible | 23° /16° | 0.6 mm | 5 | |
| Sept. 22 | Light rain | 21° /14° | 8.3 mm | 4 | |
| Sept. 23 | Partly cloudy | 21° /11° | 0.4 mm | 5 | |
| Sept. 24 | Overcast | 20° /13° | 0.4 mm | 4 | |
| Sept. 25 | Light rain | 21° /11° | 3 mm | 4 | |
| Sept. 26 | Sunny | 24° /11° | 0.8 mm | 5 | |
| Sept. 27 | Partly cloudy | 25° /12° | 0.3 mm | 5 | |
| Sept. 28 | Sunny | 26° /14° | 0 mm | 5.5 | |
| Sept. 29 | Sunny | 27° /13° | 0.2 mm | 5 | |
| Sept. 30 | Moderate rain | 25° /15° | 10.1 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Iowa City in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Iowa City forecast closer to your planned date for the most up-to-date weather information.
Change Month
Iowa City in September - FAQ
What are the expected maximum and minimum temperatures in Iowa City during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Iowa City during September?
Significant rainfall exceeding 248 mm is expected in Iowa City during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Iowa City during September?
The average wind speed in Iowa City during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Iowa City
Explore the daily rainfall trends and prepare for Iowa Citys September weather 💧
Typically, Iowa City has 7 rainy days in September with a total of 248 mm of rainfall.
UV exposure in Iowa City during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Iowa City?Get accurate weather forecasts for Iowa City, located at latitude 41.661 and longitude -91.53. Stay updated with localized weather information tailored for Iowa City.
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