- Weather Bureau Army Navy (WBAN): 04807
- Country: US
- State: IN
- Latitude: 41.617
- Longitude: -87.417
An Integrated Surface Dataset (ISD) station ID was found for this station. Newer data may be available at the ISD page.
High Temperatures
On May 15 in GARY/CHICAGO AIRPORT the average high temperature is 70.7 °F (21.5 °C). The lowest recored high temperature was 48.2 °F (9.0 °C) in 2011 and the highest recored high temperature was 95.0 °F (35.0 °C) in 2025. The high temperature is usually* between 63.3 °F (17.4 °C) and 78.1 °F (25.6 °C). About a quarter of the time, the high temperature is less than 63.3 °F (17.4 °C), and another quarter of the time, the high temperature is greater than and 78.1 °F (25.6 °C). About 95% of the time, the high temperature has been between 49.2 °F (9.6 °C) and 92.2 °F (33.4 °C).
Low Temperatures
On May 15 in GARY/CHICAGO AIRPORT the average low temperature is 51.4 °F (10.8 °C). The lowest recored low temperature was 35.6 °F (2.0 °C) in 2016 and the lowest recored low temperature was 66.2 °F (19.0 °C) in 2013. The low temperature is usually* between 46.2 °F (7.9 °C) and 56.6 °F (13.7 °C). About a quarter of the time, the low temperature is less than 46.2 °F (7.9 °C), and another quarter of the time, the low temperature is greater than and 56.6 °F (13.7 °C). About 95% of the time, the low temperature has been between 36.2 °F (2.3 °C) and 66.5 °F (19.2 °C).
Frost
On May 15 in GARY/CHICAGO AIRPORT 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: