Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On June 18 in CHICAGO the average high temperature is 75.6 °F (24.2 °C). The lowest recored high temperature was 61.2 °F (16.2 °C) in 2005 and the highest recored high temperature was 96.6 °F (35.9 °C) in 2024. The high temperature is usually* between 68.8 °F (20.4 °C) and 82.4 °F (28.0 °C). About a quarter of the time, the high temperature is less than 68.8 °F (20.4 °C), and another quarter of the time, the high temperature is greater than and 82.4 °F (28.0 °C). About 95% of the time, the high temperature has been between 55.9 °F (13.3 °C) and 95.3 °F (35.2 °C).
Low Temperatures
On June 18 in CHICAGO the average low temperature is 63.3 °F (17.4 °C). The lowest recored low temperature was 53.6 °F (12.0 °C) in 2019 and the lowest recored low temperature was 79.0 °F (26.1 °C) in 2024. The low temperature is usually* between 58.4 °F (14.6 °C) and 68.2 °F (20.1 °C). About a quarter of the time, the low temperature is less than 58.4 °F (14.6 °C), and another quarter of the time, the low temperature is greater than and 68.2 °F (20.1 °C). About 95% of the time, the low temperature has been between 49.0 °F (9.5 °C) and 77.5 °F (25.3 °C).
Frost
On June 18 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