- 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 21 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 64.1 °F (17.8 °C). The lowest recored high temperature was 46.9 °F (8.3 °C) in 1976 and the highest recored high temperature was 85.3 °F (29.6 °C) in 1947. The high temperature is usually* between 57.5 °F (14.2 °C) and 70.7 °F (21.5 °C). About a quarter of the time, the high temperature is less than 57.5 °F (14.2 °C), and another quarter of the time, the high temperature is greater than and 70.7 °F (21.5 °C). About 95% of the time, the high temperature has been between 44.9 °F (7.2 °C) and 83.2 °F (28.4 °C).
Low Temperatures
On October 21 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 41.8 °F (5.4 °C). The lowest recored low temperature was 22.5 °F (-5.3 °C) in 1952 and the lowest recored low temperature was 70.0 °F (21.1 °C) in 1979. The low temperature is usually* between 35.8 °F (2.1 °C) and 47.8 °F (8.8 °C). About a quarter of the time, the low temperature is less than 35.8 °F (2.1 °C), and another quarter of the time, the low temperature is greater than and 47.8 °F (8.8 °C). About 95% of the time, the low temperature has been between 24.3 °F (-4.3 °C) and 59.3 °F (15.1 °C).
Frost
On October 21 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 13.6% 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: