February 20 - Chicago - Weather History and Averages

High Temperatures

On February 20 in Chicago, IL (Illinois), USA the average high temperature is 39.0 °F (3.9 °C). The lowest recored high temperature was 12.0 °F (-11.1 °C) in 1966 and the highest recored high temperature was 70.0 °F (21.1 °C) in 2017. The high temperature is usually* between 31.5 °F (-0.3 °C) and 46.6 °F (8.1 °C). About a quarter of the time, the high temperature is less than 31.5 °F (-0.3 °C), and another quarter of the time, the high temperature is greater than and 46.6 °F (8.1 °C). About 95% of the time, the high temperature has been between 17.1 °F (-8.3 °C) and 61.0 °F (16.1 °C).

Low Temperatures

On February 20 in Chicago, IL (Illinois), USA the average low temperature is 23.3 °F (-4.8 °C). The lowest recored low temperature was -8.0 °F (-22.2 °C) in 2015 and the lowest recored low temperature was 55.6 °F (13.1 °C) in 2018. The low temperature is usually* between 15.7 °F (-9.0 °C) and 30.9 °F (-0.6 °C). About a quarter of the time, the low temperature is less than 15.7 °F (-9.0 °C), and another quarter of the time, the low temperature is greater than and 30.9 °F (-0.6 °C). About 95% of the time, the low temperature has been between 1.4 °F (-17.0 °C) and 45.2 °F (7.4 °C).

Frost

On February 20 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 78.2% of the time.

Usually* in this context means around 50% of the time, assuming a normal distribution of values.

Data Source(s)

The data used to compute the average high/low temperatures for this location were taken from the following stations: