Is Chicago hot in May?
Days are typically mild at 21.6°C, while nights average 11.1°C.
United States · 1991–2020 normal
Chicago in
May.
Typical May weather in Chicago: 21.6°C by day, 11.1°C at night, 111 mm of rain over 10.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high21.6°C
Typical low11.1°C
Rain111 mm
Wet days10.3
In the year-round weather comparison, May scores 68 out of 100 (September leads the year at 89). Daylight is calculated as 14 h 31 from latitude 41.85°. Open-water sea temperature is 7.1°C (4 km from the place centre).
May at a glance
What is Chicago like in May?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 111 mm across about 10 wet days.
How much daylight is there?
There are about 14 h 31 between sunrise and sunset at mid-month, calculated from the place latitude.
Is May a good time to visit?
May ranks 3 of 12 in our weather comparison; September ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4887398
- NOAA station
- USW00014819 · CHICAGO MIDWAY AP
- Station distance
- 11.4 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Chicago is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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