Weather · Chicago, United States
Chicago Weather in October
October in Chicago averages 17°C by day and 10°C at night, with about 149mm of rain. That makes it a reasonable time to visit.
Avg high
17°C
63°F
Avg low
10°C
50°F
Rainfall
149mm
#2 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Bring a compact umbrella for the odd shower.
Timing a trip around the weather? A Local Friend in Chicago builds it around the season for you.