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Chicago weather in September 2023
- 2424°C max day temperature
- 99 days with some rainfall
- 1212°C min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 8787 mm of monthly rainfall
- 66 (High) UV index
- 1919°C sea temperature
Recommended for Chicago
The September weather guide for Illinois (Chicago) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Chicago in September?
Daytime temperatures usually reach 24°C in Chicago in September, falling to 12°C at night.
How sunny is it in Chicago in September?
There are normally 8 hours of bright sunshine each day in Chicago in September - that's 61% of daylight hours.
How warm is the sea around Chicago in September?
The average sea temperature around Chicago in September is 19°C.
Does it rain in Chicago in September?
There are usually 9 days with some rain in Chicago in September and the average monthly rainfall is 87mm.
Chicago September sunrise & sunset times
Browse the sunrise and sunset times for Chicago in September 2023. Select a month to view Chicago sunrise and sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Friday, 1st September 2023||06:16||19:24|
|Friday, 15th September 2023||06:30||19:00|
|Saturday, 30th September 2023||06:46||18:34|
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