The temperatures in Chicago in October are usually low and can range between 10°C and 16°C.
You can expect about 3 to 8 days of rain in Chicago during the month of October. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Chicago in October 2025.
If you’re planning to visit Chicago in the near future, we highly recommend that you review the 14 day weather forecast for Chicago before you arrive.
Temperatures
16° / 10°
Rainy Days
5
Snowy Days
0
Dry Days
25
Rainfall
65
mm
Sun Hours
8.8
Hrs
