Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On September 11 in CHICAGO the average high temperature is 74.0 °F (23.4 °C). The lowest recored high temperature was 66.7 °F (19.3 °C) in 2017 and the highest recored high temperature was 90.9 °F (32.7 °C) in 2013. The high temperature is usually* between 68.8 °F (20.4 °C) and 79.3 °F (26.3 °C). About a quarter of the time, the high temperature is less than 68.8 °F (20.4 °C), and another quarter of the time, the high temperature is greater than and 79.3 °F (26.3 °C). About 95% of the time, the high temperature has been between 58.7 °F (14.9 °C) and 89.3 °F (31.9 °C).
Low Temperatures
On September 11 in CHICAGO the average low temperature is 64.4 °F (18.0 °C). The lowest recored low temperature was 48.6 °F (9.2 °C) in 2014 and the lowest recored low temperature was 76.1 °F (24.5 °C) in 2019. The low temperature is usually* between 60.0 °F (15.6 °C) and 68.8 °F (20.5 °C). About a quarter of the time, the low temperature is less than 60.0 °F (15.6 °C), and another quarter of the time, the low temperature is greater than and 68.8 °F (20.5 °C). About 95% of the time, the low temperature has been between 51.6 °F (10.9 °C) and 77.2 °F (25.1 °C).
Frost
On September 11 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 0.0% 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 — Integrated Surface Dataset (ISD) station ID: 997338 — from year 2007 to 2024