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Chicago weather in May 2025
Expect 21°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Chicago in May. Check more long-term weather averages for Chicago in May before you book your next holiday to Illinois in 2025/2026.
- 2121°C max day temperature
- 9 hours of sunshine per day
- 1111 days with some rainfall
- 99°C min night temperature
- 1515 hours of daylight per day
- 0No heat & humidity
- 8484 mm of monthly rainfall
- 77 (High) UV index
- 66°C sea temperature
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The May 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.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Chicago in May?
Daytime temperatures usually reach 21°C in Chicago in May, falling to 9°C at night.
How sunny is it in Chicago in May?
There are normally 9 hours of bright sunshine each day in Chicago in May - that's 62% of daylight hours.
Is the sea cold around Chicago in May?
The average sea temperature around Chicago in May is 6°C.
Does it rain in Chicago in May?
There are usually 11 days with some rain in Chicago in May and the average monthly rainfall is 84mm.
Chicago May sunrise & sunset times
Browse the sunrise and sunset times for Chicago in May 2025. Select a month to view Chicago sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 04:46 | 18:50 |
Friday, 16th May 2025 | 04:29 | 19:05 |
Saturday, 31st May 2025 | 04:18 | 19:19 |
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