September 4 - Chicago - Weather History and Averages

High Temperatures

On September 4 in Chicago, IL (Illinois), USA the average high temperature is 80.2 °F (26.8 °C). The lowest recored high temperature was 63.0 °F (17.2 °C) in 1974 and the highest recored high temperature was 95.0 °F (35.0 °C) in 2007. The high temperature is usually* between 75.5 °F (24.2 °C) and 84.9 °F (29.4 °C). About a quarter of the time, the high temperature is less than 75.5 °F (24.2 °C), and another quarter of the time, the high temperature is greater than and 84.9 °F (29.4 °C). About 95% of the time, the high temperature has been between 66.5 °F (19.2 °C) and 93.9 °F (34.4 °C).

Low Temperatures

On September 4 in Chicago, IL (Illinois), USA the average low temperature is 62.4 °F (16.9 °C). The lowest recored low temperature was 45.0 °F (7.2 °C) in 1982 and the lowest recored low temperature was 75.0 °F (23.9 °C) in 1985. The low temperature is usually* between 58.0 °F (14.5 °C) and 66.7 °F (19.3 °C). About a quarter of the time, the low temperature is less than 58.0 °F (14.5 °C), and another quarter of the time, the low temperature is greater than and 66.7 °F (19.3 °C). About 95% of the time, the low temperature has been between 49.8 °F (9.9 °C) and 74.9 °F (23.9 °C).

Frost

On September 4 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: