Station information
- Integrated Surface Dataset (ISD) station ID: 725344
- Country: US
- Latitude: 41.72
- Longitude: -87.53
High Temperatures
On September 21 in CHICAGO / CALUMET COAST GUARD the average high temperature is 67.6 °F (19.8 °C). The lowest recored high temperature was 57.9 °F (14.4 °C) in 1995 and the highest recored high temperature was 57.9 °F (14.4 °C) in 1995. The high temperature is usually* between 60.8 °F (16.0 °C) and 74.3 °F (23.5 °C). About a quarter of the time, the high temperature is less than 60.8 °F (16.0 °C), and another quarter of the time, the high temperature is greater than and 74.3 °F (23.5 °C). About 95% of the time, the high temperature has been between 47.9 °F (8.9 °C) and 87.2 °F (30.7 °C).
Low Temperatures
On September 21 in CHICAGO / CALUMET COAST GUARD the average low temperature is 55.2 °F (12.9 °C). The lowest recored low temperature was 46.9 °F (8.3 °C) in 1995 and the lowest recored low temperature was 46.9 °F (8.3 °C) in 1995. The low temperature is usually* between 50.1 °F (10.0 °C) and 60.3 °F (15.7 °C). About a quarter of the time, the low temperature is less than 50.1 °F (10.0 °C), and another quarter of the time, the low temperature is greater than and 60.3 °F (15.7 °C). About 95% of the time, the low temperature has been between 40.3 °F (4.6 °C) and 70.1 °F (21.2 °C).
Frost
On September 21 in CHICAGO / CALUMET COAST GUARD 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:
- CHICAGO / CALUMET COAST GUARD — Integrated Surface Dataset (ISD) station ID: 725344 — from year 1995 to 1995