Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On September 27 in CHICAGO the average high temperature is 69.1 °F (20.6 °C). The lowest recored high temperature was 57.7 °F (14.3 °C) in 2010 and the highest recored high temperature was 88.0 °F (31.1 °C) in 2017. The high temperature is usually* between 64.5 °F (18.1 °C) and 73.7 °F (23.2 °C). About a quarter of the time, the high temperature is less than 64.5 °F (18.1 °C), and another quarter of the time, the high temperature is greater than and 73.7 °F (23.2 °C). About 95% of the time, the high temperature has been between 55.8 °F (13.2 °C) and 82.5 °F (28.0 °C).
Low Temperatures
On September 27 in CHICAGO the average low temperature is 60.6 °F (15.9 °C). The lowest recored low temperature was 50.7 °F (10.4 °C) in 2022 and the lowest recored low temperature was 69.6 °F (20.9 °C) in 2021. The low temperature is usually* between 57.0 °F (13.9 °C) and 64.2 °F (17.9 °C). About a quarter of the time, the low temperature is less than 57.0 °F (13.9 °C), and another quarter of the time, the low temperature is greater than and 64.2 °F (17.9 °C). About 95% of the time, the low temperature has been between 50.1 °F (10.0 °C) and 71.1 °F (21.7 °C).
Frost
On September 27 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