Cool
Average highs are around 17°C, so pack for cooler days.
October verdict
Chicago, Illinois, United States in October
Weather score33Poor
Poor for holiday weather
Average highs are around 17°C, so pack for cooler days. Sunshine averages 6.1h per day, enough for a balanced month. Rainfall averages 63mm, which is relatively low for holiday planning.
October weather
Monthly averages
Temp
17°C
Rain
63mm
Sun
6.1h
Sea
15°C
Weather score
33
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 63mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Cool sea
Sea temperatures average 15°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
October17°C average high
October is close to Chicago's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
October63mm average rain
October sits near Chicago's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February and October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
October6.1 hours average sun
October sits close to Chicago's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
October15°C average sea
October is close to Chicago's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
October33 weather score
October scores below Chicago's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
Hotels in Chicago, Illinois, United States
Marriott
View all
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