- 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 April 30 in CHICAGO O'HARE INTERNATIONAL the average high temperature is 66.0 °F (18.9 °C). The lowest recored high temperature was 44.4 °F (6.9 °C) in 1956 and the highest recored high temperature was 84.9 °F (29.4 °C) in 2013. The high temperature is usually* between 59.4 °F (15.2 °C) and 72.6 °F (22.6 °C). About a quarter of the time, the high temperature is less than 59.4 °F (15.2 °C), and another quarter of the time, the high temperature is greater than and 72.6 °F (22.6 °C). About 95% of the time, the high temperature has been between 46.7 °F (8.2 °C) and 85.2 °F (29.6 °C).
Low Temperatures
On April 30 in CHICAGO O'HARE INTERNATIONAL the average low temperature is 43.5 °F (6.4 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 2008 and the lowest recored low temperature was 66.9 °F (19.4 °C) in 1970. The low temperature is usually* between 38.4 °F (3.6 °C) and 48.5 °F (9.2 °C). About a quarter of the time, the low temperature is less than 38.4 °F (3.6 °C), and another quarter of the time, the low temperature is greater than and 48.5 °F (9.2 °C). About 95% of the time, the low temperature has been between 28.8 °F (-1.8 °C) and 58.2 °F (14.5 °C).
Frost
On April 30 in CHICAGO O'HARE INTERNATIONAL expect the temperatures to drop below freezing for a risk of frost about 6.3% 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