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Typical weather in Chicago, IL (Illinois), USA on July 20

High Temperatures

On July 20 in Chicago, IL (Illinois), USA the average high temperature is 84.3 °F (29.0 °C). The lowest recored high temperature was 62.1 °F (16.7 °C) in 1950 and the highest recored high temperature was 100.9 °F (38.3 °C) in 1980. The high temperature is usually* between 79.5 °F (26.4 °C) and 89.0 °F (31.7 °C). About a quarter of the time, the high temperature is less than 79.5 °F (26.4 °C), and another quarter of the time, the high temperature is greater than and 89.0 °F (31.7 °C). About 95% of the time, the high temperature has been between 70.4 °F (21.4 °C) and 98.1 °F (36.7 °C).

Low Temperatures

On July 20 in Chicago, IL (Illinois), USA the average low temperature is 68.0 °F (20.0 °C). The lowest recored low temperature was 53.1 °F (11.7 °C) in 2003 and the lowest recored low temperature was 80.1 °F (26.7 °C) in 1983. The low temperature is usually* between 64.0 °F (17.8 °C) and 72.1 °F (22.3 °C). About a quarter of the time, the low temperature is less than 64.0 °F (17.8 °C), and another quarter of the time, the low temperature is greater than and 72.1 °F (22.3 °C). About 95% of the time, the low temperature has been between 56.3 °F (13.5 °C) and 79.7 °F (26.5 °C).

Frost

On July 20 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 0.0% 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: