- 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 July 20 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 85.8 °F (29.9 °C). The lowest recored high temperature was 69.3 °F (20.7 °C) in 1950 and the highest recored high temperature was 100.0 °F (37.8 °C) in 1980. The high temperature is usually* between 81.4 °F (27.5 °C) and 90.2 °F (32.4 °C). About a quarter of the time, the high temperature is less than 81.4 °F (27.5 °C), and another quarter of the time, the high temperature is greater than and 90.2 °F (32.4 °C). About 95% of the time, the high temperature has been between 73.0 °F (22.8 °C) and 98.6 °F (37.0 °C).
Low Temperatures
On July 20 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 65.3 °F (18.5 °C). The lowest recored low temperature was 53.1 °F (11.7 °C) in 2003 and the lowest recored low temperature was 77.9 °F (25.5 °C) in 1977. The low temperature is usually* between 61.2 °F (16.2 °C) and 69.5 °F (20.8 °C). About a quarter of the time, the low temperature is less than 61.2 °F (16.2 °C), and another quarter of the time, the low temperature is greater than and 69.5 °F (20.8 °C). About 95% of the time, the low temperature has been between 53.3 °F (11.8 °C) and 77.4 °F (25.2 °C).
Frost
On July 20 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 0.0% 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: