Station information
- Integrated Surface Dataset (ISD) station ID: 725340
- Weather Bureau Army Navy (WBAN): 14819
- Country: US
- State: IL
- Latitude: 41.786
- Longitude: -87.752
High Temperatures
On August 9 in CHICAGO MIDWAY INTL ARPT the average high temperature is 83.7 °F (28.7 °C). The lowest recored high temperature was 66.9 °F (19.4 °C) in 1994 and the highest recored high temperature was 95.0 °F (35.0 °C) in 1971. The high temperature is usually* between 79.7 °F (26.5 °C) and 87.7 °F (31.0 °C). About a quarter of the time, the high temperature is less than 79.7 °F (26.5 °C), and another quarter of the time, the high temperature is greater than and 87.7 °F (31.0 °C). About 95% of the time, the high temperature has been between 72.2 °F (22.3 °C) and 95.3 °F (35.2 °C).
Low Temperatures
On August 9 in CHICAGO MIDWAY INTL ARPT the average low temperature is 66.8 °F (19.3 °C). The lowest recored low temperature was 51.1 °F (10.6 °C) in 1972 and the lowest recored low temperature was 78.1 °F (25.6 °C) in 2025. The low temperature is usually* between 63.1 °F (17.3 °C) and 70.5 °F (21.4 °C). About a quarter of the time, the low temperature is less than 63.1 °F (17.3 °C), and another quarter of the time, the low temperature is greater than and 70.5 °F (21.4 °C). About 95% of the time, the low temperature has been between 56.1 °F (13.4 °C) and 77.6 °F (25.3 °C).
Frost
On August 9 in CHICAGO MIDWAY INTL ARPT 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:
- CHICAGO MIDWAY INTL ARPT — Integrated Surface Dataset (ISD) station ID: 725340 — Weather Bureau Army Navy (WBAN): 14819 — from year 1973 to 2025
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— Weather Bureau Army Navy (WBAN): 14819 — from year 1948 to 1972