- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On June 15 in CHICAGO the average high temperature is 74.0 °F (23.3 °C). The lowest recored high temperature was 59.7 °F (15.4 °C) in 2020 and the highest recored high temperature was 94.6 °F (34.8 °C) in 2022. The high temperature is usually* between 67.3 °F (19.6 °C) and 80.7 °F (27.0 °C). About a quarter of the time, the high temperature is less than 67.3 °F (19.6 °C), and another quarter of the time, the high temperature is greater than and 80.7 °F (27.0 °C). About 95% of the time, the high temperature has been between 54.5 °F (12.5 °C) and 93.5 °F (34.2 °C).
Low Temperatures
On June 15 in CHICAGO the average low temperature is 62.1 °F (16.7 °C). The lowest recored low temperature was 54.7 °F (12.6 °C) in 2023 and the lowest recored low temperature was 82.8 °F (28.2 °C) in 2022. The low temperature is usually* between 57.9 °F (14.4 °C) and 66.3 °F (19.1 °C). About a quarter of the time, the low temperature is less than 57.9 °F (14.4 °C), and another quarter of the time, the low temperature is greater than and 66.3 °F (19.1 °C). About 95% of the time, the low temperature has been between 50.0 °F (10.0 °C) and 74.3 °F (23.5 °C).
Frost
On June 15 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