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Typical weather in Chicago, IL (Illinois), USA on October 4

High Temperatures

On October 4 in Chicago, IL (Illinois), USA the average high temperature is 68.6 °F (20.3 °C). The lowest recored high temperature was 48.0 °F (8.9 °C) in 2014 and the highest recored high temperature was 91.4 °F (33.0 °C) in 2005. The high temperature is usually* between 62.2 °F (16.8 °C) and 75.0 °F (23.9 °C). About a quarter of the time, the high temperature is less than 62.2 °F (16.8 °C), and another quarter of the time, the high temperature is greater than and 75.0 °F (23.9 °C). About 95% of the time, the high temperature has been between 50.0 °F (10.0 °C) and 87.1 °F (30.6 °C).

Low Temperatures

On October 4 in Chicago, IL (Illinois), USA the average low temperature is 51.2 °F (10.6 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 1987 and the lowest recored low temperature was 71.6 °F (22.0 °C) in 2005. The low temperature is usually* between 44.8 °F (7.1 °C) and 57.5 °F (14.2 °C). About a quarter of the time, the low temperature is less than 44.8 °F (7.1 °C), and another quarter of the time, the low temperature is greater than and 57.5 °F (14.2 °C). About 95% of the time, the low temperature has been between 32.6 °F (0.4 °C) and 69.7 °F (20.9 °C).

Frost

On October 4 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 2.1% 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: