Free cookie consent management tool by TermsFeed

Typical weather in Chicago, IL (Illinois), USA on April 21

High Temperatures

On April 21 in Chicago, IL (Illinois), USA, the average high temperature is 61.7 °F (16.5 °C). The lowest recored high temperature was 42.1 °F (5.6 °C) in 2021 and the highest recored high temperature was 89.1 °F (31.7 °C) in 1987. The high temperature is usually* between 54.3 °F (12.4 °C) and 69.1 °F (20.6 °C). About a quarter of the time, the high temperature is less than 54.3 °F (12.4 °C), and another quarter of the time, the high temperature is greater than and 69.1 °F (20.6 °C). About 95% of the time, the high temperature has been between 40.3 °F (4.6 °C) and 83.1 °F (28.4 °C).

Low Temperatures

On April 21 in Chicago, IL (Illinois), USA, the average low temperature is 43.2 °F (6.2 °C). The lowest recored low temperature was 25.2 °F (-3.8 °C) in 1982 and the lowest recored low temperature was 70.0 °F (21.1 °C) in 1985. The low temperature is usually* between 37.8 °F (3.2 °C) and 48.5 °F (9.2 °C). About a quarter of the time, the low temperature is less than 37.8 °F (3.2 °C), and another quarter of the time, the low temperature is greater than and 48.5 °F (9.2 °C). About 95% of the time, the low temperature has been between 27.7 °F (-2.4 °C) and 58.7 °F (14.8 °C).

Frost

On April 21 in Chicago, IL (Illinois), USA, expect the temperatures to drop below freezing for a risk of frost about 7.9% 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: