Station information
- Integrated Surface Dataset (ISD) station ID: 725337
- Country: US
- State: IN
- Latitude: 41.617
- Longitude: -87.4
High Temperatures
On September 21 in GARY CHICAGO the average high temperature is 74.4 °F (23.6 °C). The lowest recored high temperature was 52.0 °F (11.1 °C) in 1983 and the highest recored high temperature was 93.2 °F (34.0 °C) in 2017. The high temperature is usually* between 68.0 °F (20.0 °C) and 80.8 °F (27.1 °C). About a quarter of the time, the high temperature is less than 68.0 °F (20.0 °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 55.8 °F (13.2 °C) and 93.0 °F (33.9 °C).
Low Temperatures
On September 21 in GARY CHICAGO the average low temperature is 56.8 °F (13.8 °C). The lowest recored low temperature was 37.9 °F (3.3 °C) in 1991 and the lowest recored low temperature was 71.6 °F (22.0 °C) in 2022. The low temperature is usually* between 51.6 °F (10.9 °C) and 62.1 °F (16.7 °C). About a quarter of the time, the low temperature is less than 51.6 °F (10.9 °C), and another quarter of the time, the low temperature is greater than and 62.1 °F (16.7 °C). About 95% of the time, the low temperature has been between 41.6 °F (5.3 °C) and 72.1 °F (22.3 °C).
Frost
On September 21 in GARY CHICAGO 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:
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— Integrated Surface Dataset (ISD) station ID: 725337 — Weather Bureau Army Navy (WBAN): 04807 — from year 2006 to 2024 - GARY CHICAGO — Integrated Surface Dataset (ISD) station ID: 725337 — from year 1981 to 2005