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 March 21 in CHICAGO MIDWAY INTL ARPT the average high temperature is 49.3 °F (9.6 °C). The lowest recored high temperature was 23.0 °F (-5.0 °C) in 1965 and the highest recored high temperature was 86.0 °F (30.0 °C) in 2012. The high temperature is usually* between 41.2 °F (5.1 °C) and 57.3 °F (14.0 °C). About a quarter of the time, the high temperature is less than 41.2 °F (5.1 °C), and another quarter of the time, the high temperature is greater than and 57.3 °F (14.0 °C). About 95% of the time, the high temperature has been between 26.0 °F (-3.3 °C) and 72.5 °F (22.5 °C).
Low Temperatures
On March 21 in CHICAGO MIDWAY INTL ARPT the average low temperature is 32.7 °F (0.4 °C). The lowest recored low temperature was 12.0 °F (-11.1 °C) in 1951 and the lowest recored low temperature was 68.0 °F (20.0 °C) in 2012. The low temperature is usually* between 26.7 °F (-3.0 °C) and 38.7 °F (3.7 °C). About a quarter of the time, the low temperature is less than 26.7 °F (-3.0 °C), and another quarter of the time, the low temperature is greater than and 38.7 °F (3.7 °C). About 95% of the time, the low temperature has been between 15.1 °F (-9.4 °C) and 50.3 °F (10.1 °C).
Frost
On March 21 in CHICAGO MIDWAY INTL ARPT expect the temperatures to drop below freezing for a risk of frost about 46.9% 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