Average Weather September in Chicago (Illinois), United States of America

The average minimum temperature (usually the minimum temperature is noted during the night) in Chicago in September is 12.0°C (53.6°F). The amount of rain in September is high with an average of 97mm (3.8in). This month generally has very pleasant temperatures. The average maximum temperature lies around 23.0°C (73.4°F). If you enjoy looking at a blue sky and like sunbathing than this month is a great period to visit Chicago. It has 247 hours of sun.

So what to wear in September? Visitors traveling to Chicago should plan on bringing a totally waterproof rain jacket since it will be raining some days. Also bring your shorts and or a skirt because it can be very nice and warm.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go here.

For other monthly weather averages and what to do in September look at the numbers below.

Monthly Averages

Min Temperature 53.6 °F
Max Temperature 73.4 °F
Chance of Rain 26.7%
Precipitation 3.8 in
Rainy Days 8
Sunshine Hours 247

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in .

Cycling
9/10
Walking
9/10
Barbeque
8/10
Camping
8/10
Outdoor sports
9/10

More Climate Information For Chicago

Weather and Climate offers all the information you need to know about the climate in Chicago.

We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in United States of America and climate and forecast data for all other countries in the world.

Where to stay in Chicago

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