Station information
- Integrated Surface Dataset (ISD) station ID: 725337
- Country: US
- State: IN
- Latitude: 41.617
- Longitude: -87.4
High Temperatures
On September 15 in GARY CHICAGO the average high temperature is 75.1 °F (23.9 °C). The lowest recored high temperature was 60.8 °F (16.0 °C) in 2011 and the highest recored high temperature was 89.6 °F (32.0 °C) in 2024. The high temperature is usually* between 69.8 °F (21.0 °C) and 80.4 °F (26.9 °C). About a quarter of the time, the high temperature is less than 69.8 °F (21.0 °C), and another quarter of the time, the high temperature is greater than and 80.4 °F (26.9 °C). About 95% of the time, the high temperature has been between 59.8 °F (15.5 °C) and 90.4 °F (32.4 °C).
Low Temperatures
On September 15 in GARY CHICAGO the average low temperature is 57.4 °F (14.1 °C). The lowest recored low temperature was 39.2 °F (4.0 °C) in 1999 and the lowest recored low temperature was 73.9 °F (23.3 °C) in 1991. The low temperature is usually* between 52.0 °F (11.1 °C) and 62.8 °F (17.1 °C). About a quarter of the time, the low temperature is less than 52.0 °F (11.1 °C), and another quarter of the time, the low temperature is greater than and 62.8 °F (17.1 °C). About 95% of the time, the low temperature has been between 41.8 °F (5.4 °C) and 73.0 °F (22.8 °C).
Frost
On September 15 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