- 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 4 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 70.0 °F (21.1 °C). The lowest recored high temperature was 48.0 °F (8.9 °C) in 2014 and the highest recored high temperature was 88.0 °F (31.1 °C) in 2018. The high temperature is usually* between 63.7 °F (17.6 °C) and 76.3 °F (24.6 °C). About a quarter of the time, the high temperature is less than 63.7 °F (17.6 °C), and another quarter of the time, the high temperature is greater than and 76.3 °F (24.6 °C). About 95% of the time, the high temperature has been between 51.7 °F (10.9 °C) and 88.3 °F (31.3 °C).
Low Temperatures
On October 4 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 48.2 °F (9.0 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 1987 and the lowest recored low temperature was 71.1 °F (21.7 °C) in 2005. The low temperature is usually* between 41.5 °F (5.3 °C) and 54.9 °F (12.7 °C). About a quarter of the time, the low temperature is less than 41.5 °F (5.3 °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 28.7 °F (-1.8 °C) and 67.7 °F (19.9 °C).
Frost
On October 4 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 5.2% 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: