Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On May 1 in CHICAGO the average high temperature is 59.4 °F (15.2 °C). The lowest recored high temperature was 44.8 °F (7.1 °C) in 2016 and the highest recored high temperature was 81.3 °F (27.4 °C) in 2021. The high temperature is usually* between 51.7 °F (11.0 °C) and 67.1 °F (19.5 °C). About a quarter of the time, the high temperature is less than 51.7 °F (11.0 °C), and another quarter of the time, the high temperature is greater than and 67.1 °F (19.5 °C). About 95% of the time, the high temperature has been between 37.1 °F (2.8 °C) and 81.7 °F (27.6 °C).
Low Temperatures
On May 1 in CHICAGO the average low temperature is 46.7 °F (8.2 °C). The lowest recored low temperature was 39.9 °F (4.4 °C) in 2023 and the lowest recored low temperature was 63.9 °F (17.7 °C) in 2013. The low temperature is usually* between 42.1 °F (5.6 °C) and 51.2 °F (10.7 °C). About a quarter of the time, the low temperature is less than 42.1 °F (5.6 °C), and another quarter of the time, the low temperature is greater than and 51.2 °F (10.7 °C). About 95% of the time, the low temperature has been between 33.5 °F (0.8 °C) and 59.9 °F (15.5 °C).
Frost
On May 1 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 1.5% 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