October 27 - Chicago - Weather History and Averages

High Temperatures

On October 27 in Chicago, IL (Illinois), USA the average high temperature is 58.7 °F (14.9 °C). The lowest recored high temperature was 37.2 °F (2.9 °C) in 2020 and the highest recored high temperature was 80.1 °F (26.7 °C) in 1974. The high temperature is usually* between 52.4 °F (11.3 °C) and 65.1 °F (18.4 °C). About a quarter of the time, the high temperature is less than 52.4 °F (11.3 °C), and another quarter of the time, the high temperature is greater than and 65.1 °F (18.4 °C). About 95% of the time, the high temperature has been between 40.3 °F (4.6 °C) and 77.1 °F (25.1 °C).

Low Temperatures

On October 27 in Chicago, IL (Illinois), USA the average low temperature is 42.5 °F (5.8 °C). The lowest recored low temperature was 25.3 °F (-3.7 °C) in 1961 and the lowest recored low temperature was 64.2 °F (17.9 °C) in 2023. The low temperature is usually* between 37.4 °F (3.0 °C) and 47.7 °F (8.7 °C). About a quarter of the time, the low temperature is less than 37.4 °F (3.0 °C), and another quarter of the time, the low temperature is greater than and 47.7 °F (8.7 °C). About 95% of the time, the low temperature has been between 27.6 °F (-2.4 °C) and 57.4 °F (14.1 °C).

Frost

On October 27 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 8.3% 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: