January 15 - CHICAGO - Weather History and Averages

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

High Temperatures

On January 15 in CHICAGO the average high temperature is 30.1 °F (-1.1 °C). The lowest recored high temperature was 4.8 °F (-15.1 °C) in 2024 and the highest recored high temperature was 46.0 °F (7.8 °C) in 2016. The high temperature is usually^* between 23.2 °F (-4.9 °C) and 36.9 °F (2.7 °C). About a quarter of the time, the high temperature is less than 23.2 °F (-4.9 °C), and another quarter of the time, the high temperature is greater than and 36.9 °F (2.7 °C). About 95% of the time, the high temperature has been between 10.1 °F (-12.2 °C) and 50.0 °F (10.0 °C).

Low Temperatures

On January 15 in CHICAGO the average low temperature is 20.2 °F (-6.6 °C). The lowest recored low temperature was -7.4 °F (-21.9 °C) in 2024 and the lowest recored low temperature was 35.1 °F (1.7 °C) in 2016. The low temperature is usually^* between 12.4 °F (-10.9 °C) and 27.9 °F (-2.3 °C). About a quarter of the time, the low temperature is less than 12.4 °F (-10.9 °C), and another quarter of the time, the low temperature is greater than and 27.9 °F (-2.3 °C). About 95% of the time, the low temperature has been between -2.4 °F (-19.1 °C) and 42.7 °F (5.9 °C).

Frost

On January 15 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 84.8% 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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