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Typical weather in Chicago, IL (Illinois), USA on September 28

High Temperatures

On September 28 in Chicago, IL (Illinois), USA the average high temperature is 70.4 °F (21.3 °C). The lowest recored high temperature was 48.9 °F (9.4 °C) in 1967 and the highest recored high temperature was 91.9 °F (33.3 °C) in 1953. The high temperature is usually* between 64.7 °F (18.2 °C) and 76.1 °F (24.5 °C). About a quarter of the time, the high temperature is less than 64.7 °F (18.2 °C), and another quarter of the time, the high temperature is greater than and 76.1 °F (24.5 °C). About 95% of the time, the high temperature has been between 53.9 °F (12.2 °C) and 87.0 °F (30.5 °C).

Low Temperatures

On September 28 in Chicago, IL (Illinois), USA the average low temperature is 52.9 °F (11.6 °C). The lowest recored low temperature was 32.4 °F (0.2 °C) in 1964 and the lowest recored low temperature was 73.9 °F (23.3 °C) in 1971. The low temperature is usually* between 47.5 °F (8.6 °C) and 58.2 °F (14.6 °C). About a quarter of the time, the low temperature is less than 47.5 °F (8.6 °C), and another quarter of the time, the low temperature is greater than and 58.2 °F (14.6 °C). About 95% of the time, the low temperature has been between 37.4 °F (3.0 °C) and 68.3 °F (20.2 °C).

Frost

On September 28 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 0.4% 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: