Station information
- Integrated Surface Dataset (ISD) station ID: 725344
- Country: US
- Latitude: 41.72
- Longitude: -87.53
High Temperatures
On September 30 in CHICAGO / CALUMET COAST GUARD the average high temperature is 79.9 °F (26.6 °C). The lowest recored high temperature was 79.9 °F (26.6 °C) in 1994 and the highest recored high temperature was 81.0 °F (27.2 °C) in 1995. The high temperature is usually* between 79.1 °F (26.2 °C) and 80.8 °F (27.1 °C). About a quarter of the time, the high temperature is less than 79.1 °F (26.2 °C), and another quarter of the time, the high temperature is greater than and 80.8 °F (27.1 °C). About 95% of the time, the high temperature has been between 77.5 °F (25.3 °C) and 82.4 °F (28.0 °C).
Low Temperatures
On September 30 in CHICAGO / CALUMET COAST GUARD the average low temperature is 58.9 °F (14.9 °C). The lowest recored low temperature was 46.9 °F (8.3 °C) in 1994 and the lowest recored low temperature was 72.9 °F (22.7 °C) in 1995. The low temperature is usually* between 51.9 °F (11.0 °C) and 65.9 °F (18.8 °C). About a quarter of the time, the low temperature is less than 51.9 °F (11.0 °C), and another quarter of the time, the low temperature is greater than and 65.9 °F (18.8 °C). About 95% of the time, the low temperature has been between 38.5 °F (3.6 °C) and 79.3 °F (26.3 °C).
Frost
On September 30 in CHICAGO / CALUMET COAST GUARD expect the temperatures to drop below freezing for a risk of frost about 0.5% 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 1994 to 1995