- Integrated Surface Dataset (ISD) station ID: 725300
- Country: US
- State: IL
- Latitude: 41.96
- Longitude: -87.932
A Weather Bureau Army Navy (WBAN) station ID was found for this station. Older data may be available at the WBAN page.
High Temperatures
On June 27 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 84.7 °F (29.3 °C). The lowest recored high temperature was 62.1 °F (16.7 °C) in 1968 and the highest recored high temperature was 99.0 °F (37.2 °C) in 1983. The high temperature is usually* between 80.7 °F (27.0 °C) and 88.6 °F (31.5 °C). About a quarter of the time, the high temperature is less than 80.7 °F (27.0 °C), and another quarter of the time, the high temperature is greater than and 88.6 °F (31.5 °C). About 95% of the time, the high temperature has been between 73.1 °F (22.8 °C) and 96.2 °F (35.7 °C).
Low Temperatures
On June 27 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 62.1 °F (16.7 °C). The lowest recored low temperature was 46.4 °F (8.0 °C) in 1955 and the lowest recored low temperature was 77.0 °F (25.0 °C) in 2025. The low temperature is usually* between 57.7 °F (14.3 °C) and 66.6 °F (19.2 °C). About a quarter of the time, the low temperature is less than 57.7 °F (14.3 °C), and another quarter of the time, the low temperature is greater than and 66.6 °F (19.2 °C). About 95% of the time, the low temperature has been between 49.2 °F (9.6 °C) and 75.1 °F (23.9 °C).
Frost
On June 27 in CHICAGO O'HARE INTERNATIONAL 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: