Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On October 31 in CHICAGO the average high temperature is 55.5 °F (13.0 °C). The lowest recored high temperature was 40.8 °F (4.9 °C) in 2023 and the highest recored high temperature was 75.4 °F (24.1 °C) in 2024. The high temperature is usually* between 49.1 °F (9.5 °C) and 61.8 °F (16.6 °C). About a quarter of the time, the high temperature is less than 49.1 °F (9.5 °C), and another quarter of the time, the high temperature is greater than and 61.8 °F (16.6 °C). About 95% of the time, the high temperature has been between 37.0 °F (2.8 °C) and 73.9 °F (23.3 °C).
Low Temperatures
On October 31 in CHICAGO the average low temperature is 44.4 °F (6.9 °C). The lowest recored low temperature was 32.5 °F (0.3 °C) in 2019 and the lowest recored low temperature was 55.8 °F (13.2 °C) in 2013. The low temperature is usually* between 39.1 °F (3.9 °C) and 49.7 °F (9.9 °C). About a quarter of the time, the low temperature is less than 39.1 °F (3.9 °C), and another quarter of the time, the low temperature is greater than and 49.7 °F (9.9 °C). About 95% of the time, the low temperature has been between 29.0 °F (-1.7 °C) and 59.9 °F (15.5 °C).
Frost
On October 31 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 5.8% 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