January 21 - Chicago - Weather History and Averages

High Temperatures

On January 21 in Chicago, IL (Illinois), USA the average high temperature is 31.7 °F (-0.2 °C). The lowest recored high temperature was 0.0 °F (-17.8 °C) in 1963 and the highest recored high temperature was 62.6 °F (17.0 °C) in 2017. The high temperature is usually* between 24.3 °F (-4.3 °C) and 39.0 °F (3.9 °C). About a quarter of the time, the high temperature is less than 24.3 °F (-4.3 °C), and another quarter of the time, the high temperature is greater than and 39.0 °F (3.9 °C). About 95% of the time, the high temperature has been between 10.4 °F (-12.0 °C) and 53.0 °F (11.7 °C).

Low Temperatures

On January 21 in Chicago, IL (Illinois), USA the average low temperature is 17.7 °F (-8.0 °C). The lowest recored low temperature was -22.0 °F (-30.0 °C) in 1984 and the lowest recored low temperature was 46.4 °F (8.0 °C) in 2017. The low temperature is usually* between 9.1 °F (-12.7 °C) and 26.3 °F (-3.2 °C). About a quarter of the time, the low temperature is less than 9.1 °F (-12.7 °C), and another quarter of the time, the low temperature is greater than and 26.3 °F (-3.2 °C). About 95% of the time, the low temperature has been between -7.3 °F (-21.8 °C) and 42.7 °F (5.9 °C).

Frost

On January 21 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 86.9% 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: