Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On December 18 in CHICAGO the average high temperature is 34.0 °F (1.1 °C). The lowest recored high temperature was 19.8 °F (-6.8 °C) in 2010 and the highest recored high temperature was 45.5 °F (7.5 °C) in 2017. The high temperature is usually* between 28.0 °F (-2.2 °C) and 40.0 °F (4.5 °C). About a quarter of the time, the high temperature is less than 28.0 °F (-2.2 °C), and another quarter of the time, the high temperature is greater than and 40.0 °F (4.5 °C). About 95% of the time, the high temperature has been between 16.6 °F (-8.5 °C) and 51.4 °F (10.8 °C).
Low Temperatures
On December 18 in CHICAGO the average low temperature is 25.4 °F (-3.7 °C). The lowest recored low temperature was 7.7 °F (-13.5 °C) in 2016 and the lowest recored low temperature was 39.7 °F (4.3 °C) in 2017. The low temperature is usually* between 18.8 °F (-7.3 °C) and 32.0 °F (-0.0 °C). About a quarter of the time, the low temperature is less than 18.8 °F (-7.3 °C), and another quarter of the time, the low temperature is greater than and 32.0 °F (-0.0 °C). About 95% of the time, the low temperature has been between 6.3 °F (-14.3 °C) and 44.5 °F (6.9 °C).
Frost
On December 18 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 75.2% 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