January 31 - CHICAGO - Weather History and Averages

Station: CHICAGO (2005 to 2025)
Country: US
State: IL
Latitude: 42.0
Longitude: -87.5

High Temperatures

On January 31 in CHICAGO the average high temperature is 33.7 °F (0.9 °C). The lowest recored high temperature was 1.2 °F (-17.1 °C) in 2019 and the highest recored high temperature was 55.6 °F (13.1 °C) in 2012. The high temperature is usually^* between 25.6 °F (-3.5 °C) and 41.7 °F (5.4 °C). About a quarter of the time, the high temperature is less than 25.6 °F (-3.5 °C), and another quarter of the time, the high temperature is greater than and 41.7 °F (5.4 °C). About 95% of the time, the high temperature has been between 10.4 °F (-12.0 °C) and 56.9 °F (13.9 °C).

Low Temperatures

On January 31 in CHICAGO the average low temperature is 22.6 °F (-5.2 °C). The lowest recored low temperature was -14.3 °F (-25.7 °C) in 2019 and the lowest recored low temperature was 46.2 °F (7.9 °C) in 2012. The low temperature is usually^* between 14.0 °F (-10.0 °C) and 31.2 °F (-0.4 °C). About a quarter of the time, the low temperature is less than 14.0 °F (-10.0 °C), and another quarter of the time, the low temperature is greater than and 31.2 °F (-0.4 °C). About 95% of the time, the low temperature has been between -2.4 °F (-19.1 °C) and 47.6 °F (8.7 °C).

Frost

On January 31 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 76.9% of the time.

^{Usually* in this context means around 50% of the
time, assuming a normal distribution of values.}

Data Source(s)

The data used to compute the average high/low temperatures for this location were taken from the following stations:

CHICAGO — Integrated Surface Dataset (ISD) station ID: 997338 — from year 2007 to 2025

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