June 27 - Chicago - Weather History and Averages

High Temperatures

On June 27 in Chicago, IL (Illinois), USA the average high temperature is 83.2 °F (28.5 °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 78.9 °F (26.0 °C) and 87.6 °F (30.9 °C). About a quarter of the time, the high temperature is less than 78.9 °F (26.0 °C), and another quarter of the time, the high temperature is greater than and 87.6 °F (30.9 °C). About 95% of the time, the high temperature has been between 70.6 °F (21.4 °C) and 95.8 °F (35.5 °C).

Low Temperatures

On June 27 in Chicago, IL (Illinois), USA the average low temperature is 64.4 °F (18.0 °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 60.6 °F (15.9 °C) and 68.3 °F (20.2 °C). About a quarter of the time, the low temperature is less than 60.6 °F (15.9 °C), and another quarter of the time, the low temperature is greater than and 68.3 °F (20.2 °C). About 95% of the time, the low temperature has been between 53.3 °F (11.8 °C) and 75.6 °F (24.2 °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: