Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On July 23 in CHICAGO the average high temperature is 80.1 °F (26.7 °C). The lowest recored high temperature was 68.2 °F (20.1 °C) in 2009 and the highest recored high temperature was 95.0 °F (35.0 °C) in 2025. The high temperature is usually* between 74.9 °F (23.8 °C) and 85.3 °F (29.6 °C). About a quarter of the time, the high temperature is less than 74.9 °F (23.8 °C), and another quarter of the time, the high temperature is greater than and 85.3 °F (29.6 °C). About 95% of the time, the high temperature has been between 64.9 °F (18.3 °C) and 95.3 °F (35.2 °C).
Low Temperatures
On July 23 in CHICAGO the average low temperature is 70.7 °F (21.5 °C). The lowest recored low temperature was 61.3 °F (16.3 °C) in 2014 and the lowest recored low temperature was 81.1 °F (27.3 °C) in 2012. The low temperature is usually* between 67.5 °F (19.7 °C) and 73.9 °F (23.3 °C). About a quarter of the time, the low temperature is less than 67.5 °F (19.7 °C), and another quarter of the time, the low temperature is greater than and 73.9 °F (23.3 °C). About 95% of the time, the low temperature has been between 61.4 °F (16.4 °C) and 79.9 °F (26.6 °C).
Frost
On July 23 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 0.0% 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 2005 to 2025