- 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 May 31 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 77.9 °F (25.5 °C). The lowest recored high temperature was 54.0 °F (12.2 °C) in 2015 and the highest recored high temperature was 91.0 °F (32.8 °C) in 2023. The high temperature is usually* between 72.4 °F (22.4 °C) and 83.5 °F (28.6 °C). About a quarter of the time, the high temperature is less than 72.4 °F (22.4 °C), and another quarter of the time, the high temperature is greater than and 83.5 °F (28.6 °C). About 95% of the time, the high temperature has been between 61.9 °F (16.6 °C) and 94.0 °F (34.4 °C).
Low Temperatures
On May 31 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 54.1 °F (12.3 °C). The lowest recored low temperature was 36.0 °F (2.2 °C) in 1996 and the lowest recored low temperature was 75.0 °F (23.9 °C) in 2011. The low temperature is usually* between 48.3 °F (9.1 °C) and 59.8 °F (15.5 °C). About a quarter of the time, the low temperature is less than 48.3 °F (9.1 °C), and another quarter of the time, the low temperature is greater than and 59.8 °F (15.5 °C). About 95% of the time, the low temperature has been between 37.3 °F (2.9 °C) and 70.8 °F (21.6 °C).
Frost
On May 31 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 0.5% 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: