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Typical weather in Chicago, IL (Illinois), USA on June 27

High Temperatures

On June 27 in Chicago, IL (Illinois), USA the average high temperature is 82.9 °F (28.3 °C). The lowest recored high temperature was 61.2 °F (16.2 °C) in 2015 and the highest recored high temperature was 100.0 °F (37.8 °C) in 1971. The high temperature is usually* between 78.0 °F (25.5 °C) and 87.7 °F (31.0 °C). About a quarter of the time, the high temperature is less than 78.0 °F (25.5 °C), and another quarter of the time, the high temperature is greater than and 87.7 °F (31.0 °C). About 95% of the time, the high temperature has been between 68.6 °F (20.4 °C) and 97.1 °F (36.1 °C).

Low Temperatures

On June 27 in Chicago, IL (Illinois), USA the average low temperature is 64.5 °F (18.1 °C). The lowest recored low temperature was 45.0 °F (7.2 °C) in 1994 and the lowest recored low temperature was 80.6 °F (27.0 °C) in 2025. The low temperature is usually* between 60.2 °F (15.7 °C) and 68.8 °F (20.4 °C). About a quarter of the time, the low temperature is less than 60.2 °F (15.7 °C), and another quarter of the time, the low temperature is greater than and 68.8 °F (20.4 °C). About 95% of the time, the low temperature has been between 52.1 °F (11.2 °C) and 76.9 °F (25.0 °C).

Frost

On June 27 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: