- Weather Bureau Army Navy (WBAN): 94846
- Country: US
- State: IL
- Latitude: 41.96
- Longitude: -87.932
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 20 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 74.1 °F (23.4 °C). The lowest recored high temperature was 52.3 °F (11.3 °C) in 1949 and the highest recored high temperature was 93.0 °F (33.9 °C) in 2012. The high temperature is usually* between 67.6 °F (19.8 °C) and 80.5 °F (27.0 °C). About a quarter of the time, the high temperature is less than 67.6 °F (19.8 °C), and another quarter of the time, the high temperature is greater than and 80.5 °F (27.0 °C). About 95% of the time, the high temperature has been between 55.2 °F (12.9 °C) and 92.9 °F (33.8 °C).
Low Temperatures
On May 20 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 49.6 °F (9.8 °C). The lowest recored low temperature was 34.9 °F (1.6 °C) in 1981 and the lowest recored low temperature was 73.9 °F (23.3 °C) in 2013. The low temperature is usually* between 43.7 °F (6.5 °C) and 55.5 °F (13.0 °C). About a quarter of the time, the low temperature is less than 43.7 °F (6.5 °C), and another quarter of the time, the low temperature is greater than and 55.5 °F (13.0 °C). About 95% of the time, the low temperature has been between 32.5 °F (0.3 °C) and 66.7 °F (19.3 °C).
Frost
On May 20 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 2.2% 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:
- CHICAGO O'HARE INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 725300 — Weather Bureau Army Navy (WBAN): 94846 — from year 1947 to 2025
-
— Weather Bureau Army Navy (WBAN): 94846 — from year 1970 to 1972