- 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 October 1 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 72.2 °F (22.3 °C). The lowest recored high temperature was 52.0 °F (11.1 °C) in 1974 and the highest recored high temperature was 88.0 °F (31.1 °C) in 1971. The high temperature is usually* between 66.1 °F (19.0 °C) and 78.2 °F (25.7 °C). About a quarter of the time, the high temperature is less than 66.1 °F (19.0 °C), and another quarter of the time, the high temperature is greater than and 78.2 °F (25.7 °C). About 95% of the time, the high temperature has been between 54.6 °F (12.6 °C) and 89.7 °F (32.1 °C).
Low Temperatures
On October 1 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 48.9 °F (9.4 °C). The lowest recored low temperature was 28.9 °F (-1.7 °C) in 1984 and the lowest recored low temperature was 71.1 °F (21.7 °C) in 1971. The low temperature is usually* between 42.9 °F (6.1 °C) and 54.9 °F (12.7 °C). About a quarter of the time, the low temperature is less than 42.9 °F (6.1 °C), and another quarter of the time, the low temperature is greater than and 54.9 °F (12.7 °C). About 95% of the time, the low temperature has been between 31.5 °F (-0.3 °C) and 66.4 °F (19.1 °C).
Frost
On October 1 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 2.9% 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: