- Latitude: 41.8375511
- Longitude: -87.6818441
High Temperatures
On average, the day in October with the warmest high temperature in Chicago, IL (Illinois), USA is October 1 at an average of 70.9 °F (21.6 °C).
On average, the day in October with the coldest high temperature in Chicago, IL (Illinois), USA is October 28 at an average of 58.7 °F (14.8 °C).
Records
The warmest recorded high temperature in October in Chicago, IL (Illinois), USA was 93.0 °F (33.9 °C) on October 6 in the year 1963 at CHICAGO MIDWAY AP — Weather Bureau Army Navy (WBAN): 14819 .
The coldest recorded high temperature in October in Chicago, IL (Illinois), USA was 35.6 °F (2.0 °C) on October 31 in the year 2023 at GARY/CHICAGO AIRPORT — Integrated Surface Dataset (ISD) station ID: 725337 — Weather Bureau Army Navy (WBAN): 04807 .
Low Temperatures
On average, the day in October with the warmest low temperature in Chicago, IL (Illinois), USA is October 1 at an average of 51.8 °F (11.0 °C).
On average, the day in October with the coldest low temperature in Chicago, IL (Illinois), USA is October 28 at an average of 42.1 °F (5.6 °C).
Records
The warmest recorded low temperature in Chicago, IL (Illinois), USA was 73.4 °F (23.0 °C) on October 6 in the year 2007 at GARY/CHICAGO AIRPORT — Integrated Surface Dataset (ISD) station ID: 725337 — Weather Bureau Army Navy (WBAN): 04807 .
The coldest recorded low temperature in Chicago, IL (Illinois), USA was 15.3 °F (-9.3 °C) on October 22 in the year 1976 at NAVAL AIR STATION — Integrated Surface Dataset (ISD) station ID: 725306 — Weather Bureau Army Navy (WBAN): 14855 .
Details
If you would like to see the temperatures for specific days, you can click on the corresponding links below: