- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On September 25 in CHICAGO the average high temperature is 71.8 °F (22.1 °C). The lowest recored high temperature was 63.0 °F (17.2 °C) in 2011 and the highest recored high temperature was 85.5 °F (29.7 °C) in 2007. The high temperature is usually* between 67.2 °F (19.6 °C) and 76.4 °F (24.7 °C). About a quarter of the time, the high temperature is less than 67.2 °F (19.6 °C), and another quarter of the time, the high temperature is greater than and 76.4 °F (24.7 °C). About 95% of the time, the high temperature has been between 58.4 °F (14.7 °C) and 85.2 °F (29.6 °C).
Low Temperatures
On September 25 in CHICAGO the average low temperature is 62.3 °F (16.8 °C). The lowest recored low temperature was 51.3 °F (10.7 °C) in 2010 and the lowest recored low temperature was 73.0 °F (22.8 °C) in 2017. The low temperature is usually* between 58.6 °F (14.8 °C) and 66.0 °F (18.9 °C). About a quarter of the time, the low temperature is less than 58.6 °F (14.8 °C), and another quarter of the time, the low temperature is greater than and 66.0 °F (18.9 °C). About 95% of the time, the low temperature has been between 51.5 °F (10.8 °C) and 73.1 °F (22.8 °C).
Frost
On September 25 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 2005 to 2024