- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On January 17 in CHICAGO the average high temperature is 32.1 °F (0.0 °C). The lowest recored high temperature was 19.0 °F (-7.2 °C) in 2024 and the highest recored high temperature was 52.2 °F (11.2 °C) in 2023. The high temperature is usually* between 25.3 °F (-3.7 °C) and 38.8 °F (3.8 °C). About a quarter of the time, the high temperature is less than 25.3 °F (-3.7 °C), and another quarter of the time, the high temperature is greater than and 38.8 °F (3.8 °C). About 95% of the time, the high temperature has been between 12.5 °F (-10.8 °C) and 51.6 °F (10.9 °C).
Low Temperatures
On January 17 in CHICAGO the average low temperature is 21.0 °F (-6.1 °C). The lowest recored low temperature was 2.3 °F (-16.5 °C) in 2016 and the lowest recored low temperature was 38.7 °F (3.7 °C) in 2023. The low temperature is usually* between 13.7 °F (-10.2 °C) and 28.3 °F (-2.0 °C). About a quarter of the time, the low temperature is less than 13.7 °F (-10.2 °C), and another quarter of the time, the low temperature is greater than and 28.3 °F (-2.0 °C). About 95% of the time, the low temperature has been between -0.3 °F (-17.9 °C) and 42.3 °F (5.7 °C).
Frost
On January 17 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 84.5% of the time.
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