Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On August 31 in CHICAGO the average high temperature is 77.1 °F (25.1 °C). The lowest recored high temperature was 61.3 °F (16.3 °C) in 2009 and the highest recored high temperature was 88.7 °F (31.5 °C) in 2012. The high temperature is usually* between 72.3 °F (22.4 °C) and 81.9 °F (27.7 °C). About a quarter of the time, the high temperature is less than 72.3 °F (22.4 °C), and another quarter of the time, the high temperature is greater than and 81.9 °F (27.7 °C). About 95% of the time, the high temperature has been between 63.1 °F (17.3 °C) and 91.1 °F (32.8 °C).
Low Temperatures
On August 31 in CHICAGO the average low temperature is 68.2 °F (20.1 °C). The lowest recored low temperature was 56.7 °F (13.7 °C) in 2009 and the lowest recored low temperature was 77.5 °F (25.3 °C) in 2010. The low temperature is usually* between 65.0 °F (18.3 °C) and 71.4 °F (21.9 °C). About a quarter of the time, the low temperature is less than 65.0 °F (18.3 °C), and another quarter of the time, the low temperature is greater than and 71.4 °F (21.9 °C). About 95% of the time, the low temperature has been between 58.8 °F (14.9 °C) and 77.6 °F (25.3 °C).
Frost
On August 31 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