- 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 August 4 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 84.4 °F (29.1 °C). The lowest recored high temperature was 69.3 °F (20.7 °C) in 1951 and the highest recored high temperature was 98.2 °F (36.8 °C) in 1947. The high temperature is usually* between 80.0 °F (26.6 °C) and 88.8 °F (31.6 °C). About a quarter of the time, the high temperature is less than 80.0 °F (26.6 °C), and another quarter of the time, the high temperature is greater than and 88.8 °F (31.6 °C). About 95% of the time, the high temperature has been between 71.5 °F (22.0 °C) and 97.3 °F (36.3 °C).
Low Temperatures
On August 4 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 63.6 °F (17.5 °C). The lowest recored low temperature was 48.9 °F (9.4 °C) in 1978 and the lowest recored low temperature was 80.1 °F (26.7 °C) in 2005. The low temperature is usually* between 59.1 °F (15.0 °C) and 68.1 °F (20.1 °C). About a quarter of the time, the low temperature is less than 59.1 °F (15.0 °C), and another quarter of the time, the low temperature is greater than and 68.1 °F (20.1 °C). About 95% of the time, the low temperature has been between 50.4 °F (10.2 °C) and 76.8 °F (24.9 °C).
Frost
On August 4 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: