- Country: US
- State: IL
- Latitude: 41.717
- Longitude: -87.533
High Temperatures
On September 20 in CALUMET (CGS) the average high temperature is 66.5 °F (19.2 °C). The lowest recored high temperature was 63.9 °F (17.7 °C) in 1987 and the highest recored high temperature was 65.8 °F (18.8 °C) in 1988. The high temperature is usually* between 63.3 °F (17.4 °C) and 69.7 °F (20.9 °C). About a quarter of the time, the high temperature is less than 63.3 °F (17.4 °C), and another quarter of the time, the high temperature is greater than and 69.7 °F (20.9 °C). About 95% of the time, the high temperature has been between 57.2 °F (14.0 °C) and 75.8 °F (24.3 °C).
Low Temperatures
On September 20 in CALUMET (CGS) the average low temperature is 56.2 °F (13.4 °C). The lowest recored low temperature was 55.9 °F (13.3 °C) in 1987 and the lowest recored low temperature was 56.8 °F (13.8 °C) in 1988. The low temperature is usually* between 52.7 °F (11.5 °C) and 59.7 °F (15.4 °C). About a quarter of the time, the low temperature is less than 52.7 °F (11.5 °C), and another quarter of the time, the low temperature is greater than and 59.7 °F (15.4 °C). About 95% of the time, the low temperature has been between 46.1 °F (7.8 °C) and 66.3 °F (19.0 °C).
Frost
On September 20 in CALUMET (CGS) 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:
- CALUMET (CGS) — Integrated Surface Dataset (ISD) station ID: 722418 — from year 1987 to 1988