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Chicago weather in September 2023
- 24°C max day temperature
24 - 8 hours of sunshine per day
- 9 days with some rainfall
9 - 12°C min night temperature
12 - 12 hours of daylight per day
12 - No heat & humidity
0 - 87 mm of monthly rainfall
87 - 6 (High) UV index
6 - 19°C sea temperature
19
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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.
JanFebMarAprMayJunJulAugSepOctNovDec
| 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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