Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On May 30 in CHICAGO the average high temperature is 70.3 °F (21.3 °C). The lowest recored high temperature was 55.0 °F (12.8 °C) in 2014 and the highest recored high temperature was 85.6 °F (29.8 °C) in 2011. The high temperature is usually* between 63.5 °F (17.5 °C) and 77.1 °F (25.0 °C). About a quarter of the time, the high temperature is less than 63.5 °F (17.5 °C), and another quarter of the time, the high temperature is greater than and 77.1 °F (25.0 °C). About 95% of the time, the high temperature has been between 50.7 °F (10.4 °C) and 89.9 °F (32.2 °C).
Low Temperatures
On May 30 in CHICAGO the average low temperature is 57.7 °F (14.3 °C). The lowest recored low temperature was 45.7 °F (7.6 °C) in 2015 and the lowest recored low temperature was 69.6 °F (20.9 °C) in 2022. The low temperature is usually* between 52.9 °F (11.6 °C) and 62.5 °F (16.9 °C). About a quarter of the time, the low temperature is less than 52.9 °F (11.6 °C), and another quarter of the time, the low temperature is greater than and 62.5 °F (16.9 °C). About 95% of the time, the low temperature has been between 43.7 °F (6.5 °C) and 71.6 °F (22.0 °C).
Frost
On May 30 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