September 19 - Chicago - Weather History and Averages

High Temperatures

On September 19 in Chicago, IL (Illinois), USA the average high temperature is 75.8 °F (24.4 °C). The lowest recored high temperature was 54.0 °F (12.2 °C) in 1991 and the highest recored high temperature was 93.0 °F (33.9 °C) in 1955. The high temperature is usually* between 70.5 °F (21.4 °C) and 81.2 °F (27.4 °C). About a quarter of the time, the high temperature is less than 70.5 °F (21.4 °C), and another quarter of the time, the high temperature is greater than and 81.2 °F (27.4 °C). About 95% of the time, the high temperature has been between 60.2 °F (15.7 °C) and 91.5 °F (33.0 °C).

Low Temperatures

On September 19 in Chicago, IL (Illinois), USA the average low temperature is 58.1 °F (14.5 °C). The lowest recored low temperature was 37.4 °F (3.0 °C) in 2012 and the lowest recored low temperature was 75.2 °F (24.0 °C) in 2002. The low temperature is usually* between 53.3 °F (11.8 °C) and 62.9 °F (17.1 °C). About a quarter of the time, the low temperature is less than 53.3 °F (11.8 °C), and another quarter of the time, the low temperature is greater than and 62.9 °F (17.1 °C). About 95% of the time, the low temperature has been between 44.1 °F (6.7 °C) and 72.0 °F (22.2 °C).

Frost

On September 19 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: