- 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 25 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 72.6 °F (22.6 °C). The lowest recored high temperature was 55.9 °F (13.3 °C) in 2000 and the highest recored high temperature was 93.0 °F (33.9 °C) in 2017. The high temperature is usually* between 67.2 °F (19.5 °C) and 78.0 °F (25.6 °C). About a quarter of the time, the high temperature is less than 67.2 °F (19.5 °C), and another quarter of the time, the high temperature is greater than and 78.0 °F (25.6 °C). About 95% of the time, the high temperature has been between 56.8 °F (13.8 °C) and 88.4 °F (31.3 °C).
Low Temperatures
On September 25 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 50.6 °F (10.3 °C). The lowest recored low temperature was 35.1 °F (1.7 °C) in 1989 and the lowest recored low temperature was 69.3 °F (20.7 °C) in 1958. The low temperature is usually* between 44.7 °F (7.1 °C) and 56.4 °F (13.6 °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 56.4 °F (13.6 °C). About 95% of the time, the low temperature has been between 33.6 °F (0.9 °C) and 67.5 °F (19.7 °C).
Frost
On September 25 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 1.6% 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: