Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Chicago, Illinois, United States in May
Weather score46Mixed
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 9h per day, so bright days are a strong part of the month. Rainfall averages 86mm, so some wet days are possible.
May weather
Monthly averages
Temp
21°C
Rain
86mm
Sun
9h
Sea
7°C
Weather score
46
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 86mm, so some wet days are possible.
Bright
Sunshine averages 9h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 7°C, so the water can feel cool.
Map
Weather map
Compare Chicago, Illinois, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May21°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
May86mm average rain
May is wetter than Chicago's yearly average, so flexible plans matter more.
Driest monthsJanuary to February and October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May9 hours average sun
May is brighter than Chicago's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May7°C average sea
May is below Chicago's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
May46 weather score
May sits close to Chicago's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
Hotels in Chicago, Illinois, United States
Marriott
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The Ritz-Carlton, ChicagoChicago, Illinois, USA
The St. Regis ChicagoChicago, Illinois, USA
JW Marriott ChicagoChicago, Illinois, USA
The Gwen, a Luxury Collection Hotel, Michigan Avenue ChicagoChicago, Illinois, USA
Chicago Marriott Downtown Magnificent MileChicago, Illinois, USAChicago Marriott SchaumburgChicago, Illinois, USA