- Country: US
- Latitude: 41.73
- Longitude: -87.54
High Temperatures
On May 15 in 9087044 - CALUMET IL the average high temperature is 66.6 °F (19.2 °C). The lowest recored high temperature was 46.2 °F (7.9 °C) in 2011 and the highest recored high temperature was 91.8 °F (33.2 °C) in 2025. The high temperature is usually* between 58.2 °F (14.6 °C) and 74.9 °F (23.8 °C). About a quarter of the time, the high temperature is less than 58.2 °F (14.6 °C), and another quarter of the time, the high temperature is greater than and 74.9 °F (23.8 °C). About 95% of the time, the high temperature has been between 42.3 °F (5.7 °C) and 90.8 °F (32.6 °C).
Low Temperatures
On May 15 in 9087044 - CALUMET IL the average low temperature is 50.7 °F (10.4 °C). The lowest recored low temperature was 39.7 °F (4.3 °C) in 2016 and the lowest recored low temperature was 59.7 °F (15.4 °C) in 2022. The low temperature is usually* between 46.4 °F (8.0 °C) and 54.9 °F (12.7 °C). About a quarter of the time, the low temperature is less than 46.4 °F (8.0 °C), and another quarter of the time, the low temperature is greater than and 54.9 °F (12.7 °C). About 95% of the time, the low temperature has been between 38.4 °F (3.5 °C) and 63.0 °F (17.2 °C).
Frost
On May 15 in 9087044 - CALUMET IL expect the temperatures to drop below freezing for a risk of frost about 0.1% 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:
- 9087044 - CALUMET IL — Integrated Surface Dataset (ISD) station ID: 997255 — from year 2005 to 2025