- Country: US
- State: IL
- Latitude: 41.717
- Longitude: -87.533
High Temperatures
On September 30 in CALUMET (CGS) the average high temperature is 69.0 °F (20.6 °C). The lowest recored high temperature was 63.9 °F (17.7 °C) in 1987 and the highest recored high temperature was 72.0 °F (22.2 °C) in 1988. The high temperature is usually* between 65.2 °F (18.5 °C) and 72.9 °F (22.7 °C). About a quarter of the time, the high temperature is less than 65.2 °F (18.5 °C), and another quarter of the time, the high temperature is greater than and 72.9 °F (22.7 °C). About 95% of the time, the high temperature has been between 58.0 °F (14.4 °C) and 80.1 °F (26.7 °C).
Low Temperatures
On September 30 in CALUMET (CGS) the average low temperature is 56.4 °F (13.6 °C). The lowest recored low temperature was 52.0 °F (11.1 °C) in 1987 and the lowest recored low temperature was 58.8 °F (14.9 °C) in 1988. The low temperature is usually* between 53.3 °F (11.9 °C) and 59.6 °F (15.3 °C). About a quarter of the time, the low temperature is less than 53.3 °F (11.9 °C), and another quarter of the time, the low temperature is greater than and 59.6 °F (15.3 °C). About 95% of the time, the low temperature has been between 47.4 °F (8.6 °C) and 65.5 °F (18.6 °C).
Frost
On September 30 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 1989