- Integrated Surface Dataset (ISD) station ID: 725340
- Country: US
- State: IL
- Latitude: 41.786
- Longitude: -87.752
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 15 in CHICAGO MIDWAY INTL ARPT the average high temperature is 71.6 °F (22.0 °C). The lowest recored high temperature was 48.0 °F (8.9 °C) in 2011 and the highest recored high temperature was 95.0 °F (35.0 °C) in 2025. The high temperature is usually* between 64.4 °F (18.0 °C) and 78.8 °F (26.0 °C). About a quarter of the time, the high temperature is less than 64.4 °F (18.0 °C), and another quarter of the time, the high temperature is greater than and 78.8 °F (26.0 °C). About 95% of the time, the high temperature has been between 50.8 °F (10.4 °C) and 92.5 °F (33.6 °C).
Low Temperatures
On May 15 in CHICAGO MIDWAY INTL ARPT the average low temperature is 51.7 °F (11.0 °C). The lowest recored low temperature was 37.9 °F (3.3 °C) in 2016 and the lowest recored low temperature was 71.1 °F (21.7 °C) in 1962. The low temperature is usually* between 46.5 °F (8.0 °C) and 57.0 °F (13.9 °C). About a quarter of the time, the low temperature is less than 46.5 °F (8.0 °C), and another quarter of the time, the low temperature is greater than and 57.0 °F (13.9 °C). About 95% of the time, the low temperature has been between 36.5 °F (2.5 °C) and 67.0 °F (19.4 °C).
Frost
On May 15 in CHICAGO MIDWAY INTL ARPT expect the temperatures to drop below freezing for a risk of frost about 0.6% 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: