Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On December 20 in CHICAGO the average high temperature is 36.2 °F (2.3 °C). The lowest recored high temperature was 23.2 °F (-4.9 °C) in 2005 and the highest recored high temperature was 49.8 °F (9.9 °C) in 2015. The high temperature is usually* between 30.7 °F (-0.7 °C) and 41.7 °F (5.4 °C). About a quarter of the time, the high temperature is less than 30.7 °F (-0.7 °C), and another quarter of the time, the high temperature is greater than and 41.7 °F (5.4 °C). About 95% of the time, the high temperature has been between 20.2 °F (-6.5 °C) and 52.2 °F (11.2 °C).
Low Temperatures
On December 20 in CHICAGO the average low temperature is 27.4 °F (-2.6 °C). The lowest recored low temperature was 8.8 °F (-12.9 °C) in 2005 and the lowest recored low temperature was 39.4 °F (4.1 °C) in 2012. The low temperature is usually* between 20.6 °F (-6.3 °C) and 34.2 °F (1.2 °C). About a quarter of the time, the low temperature is less than 20.6 °F (-6.3 °C), and another quarter of the time, the low temperature is greater than and 34.2 °F (1.2 °C). About 95% of the time, the low temperature has been between 7.7 °F (-13.5 °C) and 47.1 °F (8.4 °C).
Frost
On December 20 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 67.6% 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:
- CHICAGO — Integrated Surface Dataset (ISD) station ID: 997338 — from year 2005 to 2024