Station information
- Integrated Surface Dataset (ISD) station ID: 997338
- Country: US
- State: IL
- Latitude: 42.0
- Longitude: -87.5
High Temperatures
On February 20 in CHICAGO the average high temperature is 40.0 °F (4.4 °C). The lowest recored high temperature was 17.6 °F (-8.0 °C) in 2015 and the highest recored high temperature was 63.1 °F (17.3 °C) in 2018. The high temperature is usually* between 31.1 °F (-0.5 °C) and 48.8 °F (9.4 °C). About a quarter of the time, the high temperature is less than 31.1 °F (-0.5 °C), and another quarter of the time, the high temperature is greater than and 48.8 °F (9.4 °C). About 95% of the time, the high temperature has been between 14.1 °F (-9.9 °C) and 65.8 °F (18.8 °C).
Low Temperatures
On February 20 in CHICAGO the average low temperature is 26.2 °F (-3.2 °C). The lowest recored low temperature was 3.2 °F (-16.0 °C) in 2015 and the lowest recored low temperature was 55.6 °F (13.1 °C) in 2018. The low temperature is usually* between 17.8 °F (-7.9 °C) and 34.6 °F (1.4 °C). About a quarter of the time, the low temperature is less than 17.8 °F (-7.9 °C), and another quarter of the time, the low temperature is greater than and 34.6 °F (1.4 °C). About 95% of the time, the low temperature has been between 1.7 °F (-16.8 °C) and 50.6 °F (10.3 °C).
Frost
On February 20 in CHICAGO expect the temperatures to drop below freezing for a risk of frost about 68.0% 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 — Integrated Surface Dataset (ISD) station ID: 997338 — from year 2007 to 2025