- 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 September 27 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 72.3 °F (22.4 °C). The lowest recored high temperature was 53.1 °F (11.7 °C) in 1984 and the highest recored high temperature was 91.9 °F (33.3 °C) in 2017. The high temperature is usually* between 66.7 °F (19.3 °C) and 77.9 °F (25.5 °C). About a quarter of the time, the high temperature is less than 66.7 °F (19.3 °C), and another quarter of the time, the high temperature is greater than and 77.9 °F (25.5 °C). About 95% of the time, the high temperature has been between 56.0 °F (13.3 °C) and 88.6 °F (31.5 °C).
Low Temperatures
On September 27 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 50.1 °F (10.1 °C). The lowest recored low temperature was 32.4 °F (0.2 °C) in 1947 and the lowest recored low temperature was 72.0 °F (22.2 °C) in 1998. The low temperature is usually* between 44.7 °F (7.1 °C) and 55.5 °F (13.1 °C). About a quarter of the time, the low temperature is less than 44.7 °F (7.1 °C), and another quarter of the time, the low temperature is greater than and 55.5 °F (13.1 °C). About 95% of the time, the low temperature has been between 34.5 °F (1.4 °C) and 65.8 °F (18.8 °C).
Frost
On September 27 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 1.2% 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: