Station information
- Weather Bureau Army Navy (WBAN): 14819
- Country: US
- State: IL
- Latitude: 41.786
- Longitude: -87.752
High Temperatures
On July 21 in CHICAGO MIDWAY AP the average high temperature is 85.3 °F (29.6 °C). The lowest recored high temperature was 66.2 °F (19.0 °C) in 1996 and the highest recored high temperature was 100.9 °F (38.3 °C) in 2011. The high temperature is usually* between 80.7 °F (27.0 °C) and 90.0 °F (32.2 °C). About a quarter of the time, the high temperature is less than 80.7 °F (27.0 °C), and another quarter of the time, the high temperature is greater than and 90.0 °F (32.2 °C). About 95% of the time, the high temperature has been between 71.8 °F (22.1 °C) and 98.8 °F (37.1 °C).
Low Temperatures
On July 21 in CHICAGO MIDWAY AP the average low temperature is 68.4 °F (20.2 °C). The lowest recored low temperature was 51.1 °F (10.6 °C) in 1970 and the lowest recored low temperature was 82.0 °F (27.8 °C) in 2011. The low temperature is usually* between 64.6 °F (18.1 °C) and 72.3 °F (22.4 °C). About a quarter of the time, the low temperature is less than 64.6 °F (18.1 °C), and another quarter of the time, the low temperature is greater than and 72.3 °F (22.4 °C). About 95% of the time, the low temperature has been between 57.3 °F (14.0 °C) and 79.6 °F (26.4 °C).
Frost
On July 21 in CHICAGO MIDWAY AP expect the temperatures to drop below freezing for a risk of frost about 0.0% 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: 725340 — Weather Bureau Army Navy (WBAN): 14819 — from year 1973 to 2025 - CHICAGO MIDWAY AP — Weather Bureau Army Navy (WBAN): 14819 — from year 1948 to 1972