Station information
- Integrated Surface Dataset (ISD) station ID: 725337
- Country: US
- State: IN
- Latitude: 41.617
- Longitude: -87.4
High Temperatures
On May 21 in GARY CHICAGO the average high temperature is 72.4 °F (22.4 °C). The lowest recored high temperature was 51.8 °F (11.0 °C) in 1997 and the highest recored high temperature was 89.6 °F (32.0 °C) in 2024. The high temperature is usually* between 65.4 °F (18.6 °C) and 79.3 °F (26.3 °C). About a quarter of the time, the high temperature is less than 65.4 °F (18.6 °C), and another quarter of the time, the high temperature is greater than and 79.3 °F (26.3 °C). About 95% of the time, the high temperature has been between 52.2 °F (11.2 °C) and 92.6 °F (33.6 °C).
Low Temperatures
On May 21 in GARY CHICAGO the average low temperature is 53.2 °F (11.8 °C). The lowest recored low temperature was 33.8 °F (1.0 °C) in 2002 and the lowest recored low temperature was 66.2 °F (19.0 °C) in 2021. The low temperature is usually* between 48.1 °F (9.0 °C) and 58.3 °F (14.6 °C). About a quarter of the time, the low temperature is less than 48.1 °F (9.0 °C), and another quarter of the time, the low temperature is greater than and 58.3 °F (14.6 °C). About 95% of the time, the low temperature has been between 38.4 °F (3.6 °C) and 68.1 °F (20.0 °C).
Frost
On May 21 in GARY CHICAGO expect the temperatures to drop below freezing for a risk of frost about 0.2% 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 2025 - GARY CHICAGO — Integrated Surface Dataset (ISD) station ID: 725337 — from year 1982 to 2005