January - CHICAGO - Weather History and Averages

High Temperatures

On average, the day in January with the warmest high temperature in CHICAGO is January 11 at an average of 37.1 °F (2.9 °C).

On average, the day in January with the coldest high temperature in CHICAGO is January 20 at an average of 29.4 °F (-1.4 °C).

The warmest recorded high temperature in January in CHICAGO was 63.1 °F (17.3 °C) on January 7 in the year 2008 at CHICAGO — Integrated Surface Dataset (ISD) station ID: 997338 .

The coldest recorded high temperature in January in CHICAGO was 1.2 °F (-17.1 °C) on January 31 in the year 2019 at CHICAGO — Integrated Surface Dataset (ISD) station ID: 997338 .

On average, the day in January with the warmest low temperature in CHICAGO is January 11 at an average of 26.7 °F (-2.9 °C).

On average, the day in January with the coldest low temperature in CHICAGO is January 20 at an average of 18.9 °F (-7.3 °C).

The warmest recorded low temperature in CHICAGO was 56.5 °F (13.6 °C) on January 7 in the year 2008 at CHICAGO — Integrated Surface Dataset (ISD) station ID: 997338 .

The coldest recorded low temperature in CHICAGO was -19.8 °F (-28.8 °C) on January 30 in the year 2019 at CHICAGO — Integrated Surface Dataset (ISD) station ID: 997338 .

If you would like to see the temperatures for specific days, you can click on the corresponding links below: