- 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 12 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 70.5 °F (21.4 °C). The lowest recored high temperature was 46.0 °F (7.8 °C) in 1966 and the highest recored high temperature was 91.0 °F (32.8 °C) in 2022. The high temperature is usually* between 63.3 °F (17.4 °C) and 77.6 °F (25.3 °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 77.6 °F (25.3 °C). About 95% of the time, the high temperature has been between 49.6 °F (9.8 °C) and 91.3 °F (32.9 °C).
Low Temperatures
On May 12 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 46.6 °F (8.1 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 1981 and the lowest recored low temperature was 73.9 °F (23.3 °C) in 2022. The low temperature is usually* between 41.4 °F (5.2 °C) and 51.9 °F (11.0 °C). About a quarter of the time, the low temperature is less than 41.4 °F (5.2 °C), and another quarter of the time, the low temperature is greater than and 51.9 °F (11.0 °C). About 95% of the time, the low temperature has been between 31.4 °F (-0.3 °C) and 61.9 °F (16.6 °C).
Frost
On May 12 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 3.0% 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:
- 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