What to Wear in Chicago in September
Warm and lovely — one of the best months to visit. Expect 14°–23°C with 10 rainy days on average.
☀️
High
23°C
🌙
Low
14°C
🌧️
Rain days
10
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Feel
Rainy Day
Typical outfit
~19°C average
About September in Chicago
September in Chicago typically brings warm and lovely — one of the best months to visit. With averages of 14°–23°C, the conditions call for rain is in the forecast — waterproof layers are your best friend today.
Dress in waterproof layers rather than one very thick coat. You'll warm up walking and cool down in buildings.
September in other cities