Weather in Chicago in September
The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.
Climate Overview
September is an excellent time to visit Chicago. Chicago has a Moderate climate with average yearly highs of 22°C, lows of 14°C, and approximately 9 rainy days per month.
22°C
14°C
9days
12.6h
Is September a good time to visit Chicago?
The weather is near-perfect with ideal temperatures and minimal rain.
Daylight
6:30 AM
7:04 PM
Weather by Month
| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 2°C | -4°C | 8 | Good |
| February | 1°C | -7°C | 9 | Good |
| March | 8°C | 0°C | 12 | Good |
| April | 11°C | 2°C | 16 | Wet |
| May | 17°C | 9°C | 14 | Excellent (best) |
| June | 25°C | 17°C | 14 | Excellent (best) |
| July | 28°C | 20°C | 14 | Wet |
| August | 27°C | 19°C | 9 | Good |
| September | 22°C | 14°C | 9 | Excellent (best) |
| October | 14°C | 6°C | 12 | Excellent (best) |
| November | 12°C | 3°C | 6 | Good |
| December | 3°C | -3°C | 5 | Good |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
What to Pack for September
Layers, a light jacket, comfortable walking shoes, and an umbrella.
Planning a trip to Chicago?
Common Questions
Is September a good time to visit Chicago? +
September is typically Excellent for visiting Chicago, with average highs of 22°C and around 9 rainy days.
What should I pack for Chicago in September? +
With highs of 22°C and lows of 14°C in {month}, we recommend: Layers, a light jacket, comfortable walking shoes, and an umbrella.
Does it rain a lot in Chicago in September? +
Chicago typically sees around 9 rainy days in September.
How many hours of daylight are there in Chicago in September? +
In September, Chicago gets approximately 12.6 hours of daylight per day.
Is September peak season in Chicago? +
Yes, September is peak season in Chicago. Expect higher prices and more crowds, but also the best weather.
What is the best month to visit Chicago? +
The best months to visit Chicago are May, June, September, October, when the weather is optimal for sightseeing.
More Chicago Guides
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Overview
Complete travel guide for Chicago: top things to do, itineraries, and typical costs.