Station information
- Integrated Surface Dataset (ISD) station ID: 997255
- Country: US
- Latitude: 41.73
- Longitude: -87.54
High Temperatures
On August 20 in 9087044 - CALUMET IL the average high temperature is 78.5 °F (25.8 °C). The lowest recored high temperature was 69.6 °F (20.9 °C) in 2024 and the highest recored high temperature was 90.0 °F (32.2 °C) in 2010. The high temperature is usually* between 75.1 °F (23.9 °C) and 81.8 °F (27.7 °C). About a quarter of the time, the high temperature is less than 75.1 °F (23.9 °C), and another quarter of the time, the high temperature is greater than and 81.8 °F (27.7 °C). About 95% of the time, the high temperature has been between 68.6 °F (20.3 °C) and 88.3 °F (31.3 °C).
Low Temperatures
On August 20 in 9087044 - CALUMET IL the average low temperature is 67.2 °F (19.5 °C). The lowest recored low temperature was 60.6 °F (15.9 °C) in 2015 and the lowest recored low temperature was 74.8 °F (23.8 °C) in 2010. The low temperature is usually* between 64.6 °F (18.1 °C) and 69.7 °F (21.0 °C). About a quarter of the time, the low temperature is less than 64.6 °F (18.1 °C), and another quarter of the time, the low temperature is greater than and 69.7 °F (21.0 °C). About 95% of the time, the low temperature has been between 59.7 °F (15.4 °C) and 74.6 °F (23.7 °C).
Frost
On August 20 in 9087044 - CALUMET IL 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:
- 9087044 - CALUMET IL — Integrated Surface Dataset (ISD) station ID: 997255 — from year 2005 to 2025