Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On June 28 in CHICAGO the average high temperature is 78.6 °F (25.9 °C). The lowest recored high temperature was 68.4 °F (20.2 °C) in 2023 and the highest recored high temperature was 92.1 °F (33.4 °C) in 2025. The high temperature is usually* between 73.9 °F (23.3 °C) and 83.4 °F (28.5 °C). About a quarter of the time, the high temperature is less than 73.9 °F (23.3 °C), and another quarter of the time, the high temperature is greater than and 83.4 °F (28.5 °C). About 95% of the time, the high temperature has been between 64.9 °F (18.3 °C) and 92.4 °F (33.6 °C).
Low Temperatures
On June 28 in CHICAGO the average low temperature is 67.3 °F (19.6 °C). The lowest recored low temperature was 61.0 °F (16.1 °C) in 2015 and the lowest recored low temperature was 76.3 °F (24.6 °C) in 2025. The low temperature is usually* between 63.7 °F (17.6 °C) and 70.9 °F (21.6 °C). About a quarter of the time, the low temperature is less than 63.7 °F (17.6 °C), and another quarter of the time, the low temperature is greater than and 70.9 °F (21.6 °C). About 95% of the time, the low temperature has been between 56.8 °F (13.8 °C) and 77.7 °F (25.4 °C).
Frost
On June 28 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 2025