Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On July 11 in CHICAGO the average high temperature is 77.9 °F (25.5 °C). The lowest recored high temperature was 70.0 °F (21.1 °C) in 2021 and the highest recored high temperature was 92.3 °F (33.5 °C) in 2025. The high temperature is usually* between 73.4 °F (23.0 °C) and 82.4 °F (28.0 °C). About a quarter of the time, the high temperature is less than 73.4 °F (23.0 °C), and another quarter of the time, the high temperature is greater than and 82.4 °F (28.0 °C). About 95% of the time, the high temperature has been between 64.9 °F (18.3 °C) and 90.9 °F (32.7 °C).
Low Temperatures
On July 11 in CHICAGO the average low temperature is 69.1 °F (20.6 °C). The lowest recored low temperature was 62.1 °F (16.7 °C) in 2007 and the lowest recored low temperature was 76.3 °F (24.6 °C) in 2025. The low temperature is usually* between 66.5 °F (19.2 °C) and 71.8 °F (22.1 °C). About a quarter of the time, the low temperature is less than 66.5 °F (19.2 °C), and another quarter of the time, the low temperature is greater than and 71.8 °F (22.1 °C). About 95% of the time, the low temperature has been between 61.5 °F (16.4 °C) and 76.8 °F (24.9 °C).
Frost
On July 11 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