Station information
- Integrated Surface Dataset (ISD) station ID: 725337
- Country: US
- State: IN
- Latitude: 41.617
- Longitude: -87.4
High Temperatures
On April 21 in GARY CHICAGO the average high temperature is 61.1 °F (16.1 °C). The lowest recored high temperature was 44.6 °F (7.0 °C) in 2021 and the highest recored high temperature was 84.9 °F (29.4 °C) in 1985. The high temperature is usually* between 53.6 °F (12.0 °C) and 68.5 °F (20.3 °C). About a quarter of the time, the high temperature is less than 53.6 °F (12.0 °C), and another quarter of the time, the high temperature is greater than and 68.5 °F (20.3 °C). About 95% of the time, the high temperature has been between 39.4 °F (4.1 °C) and 82.7 °F (28.2 °C).
Low Temperatures
On April 21 in GARY CHICAGO the average low temperature is 43.6 °F (6.4 °C). The lowest recored low temperature was 30.7 °F (-0.7 °C) in 2021 and the lowest recored low temperature was 64.9 °F (18.3 °C) in 1985. The low temperature is usually* between 38.1 °F (3.4 °C) and 49.0 °F (9.5 °C). About a quarter of the time, the low temperature is less than 38.1 °F (3.4 °C), and another quarter of the time, the low temperature is greater than and 49.0 °F (9.5 °C). About 95% of the time, the low temperature has been between 27.7 °F (-2.4 °C) and 59.4 °F (15.2 °C).
Frost
On April 21 in GARY CHICAGO expect the temperatures to drop below freezing for a risk of frost about 7.6% 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