Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On May 9 in CHICAGO the average high temperature is 61.1 °F (16.2 °C). The lowest recored high temperature was 47.7 °F (8.7 °C) in 2021 and the highest recored high temperature was 81.3 °F (27.4 °C) in 2014. The high temperature is usually* between 54.0 °F (12.2 °C) and 68.2 °F (20.1 °C). About a quarter of the time, the high temperature is less than 54.0 °F (12.2 °C), and another quarter of the time, the high temperature is greater than and 68.2 °F (20.1 °C). About 95% of the time, the high temperature has been between 40.5 °F (4.7 °C) and 81.8 °F (27.6 °C).
Low Temperatures
On May 9 in CHICAGO the average low temperature is 48.2 °F (9.0 °C). The lowest recored low temperature was 35.6 °F (2.0 °C) in 2020 and the lowest recored low temperature was 60.4 °F (15.8 °C) in 2014. The low temperature is usually* between 43.5 °F (6.4 °C) and 52.8 °F (11.6 °C). About a quarter of the time, the low temperature is less than 43.5 °F (6.4 °C), and another quarter of the time, the low temperature is greater than and 52.8 °F (11.6 °C). About 95% of the time, the low temperature has been between 34.6 °F (1.4 °C) and 61.7 °F (16.5 °C).
Frost
On May 9 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 1.0% 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