August 12 - Chicago - Weather History and Averages

High Temperatures

On August 12 in Chicago, IL (Illinois), USA the average high temperature is 81.1 °F (27.3 °C). The lowest recored high temperature was 62.6 °F (17.0 °C) in 2004 and the highest recored high temperature was 99.0 °F (37.2 °C) in 1995. The high temperature is usually* between 77.2 °F (25.1 °C) and 85.0 °F (29.4 °C). About a quarter of the time, the high temperature is less than 77.2 °F (25.1 °C), and another quarter of the time, the high temperature is greater than and 85.0 °F (29.4 °C). About 95% of the time, the high temperature has been between 69.7 °F (20.9 °C) and 92.5 °F (33.6 °C).

Low Temperatures

On August 12 in Chicago, IL (Illinois), USA the average low temperature is 64.8 °F (18.2 °C). The lowest recored low temperature was 45.0 °F (7.2 °C) in 1967 and the lowest recored low temperature was 84.9 °F (29.4 °C) in 1995. The low temperature is usually* between 60.9 °F (16.1 °C) and 68.6 °F (20.3 °C). About a quarter of the time, the low temperature is less than 60.9 °F (16.1 °C), and another quarter of the time, the low temperature is greater than and 68.6 °F (20.3 °C). About 95% of the time, the low temperature has been between 53.7 °F (12.1 °C) and 75.8 °F (24.3 °C).

Frost

On August 12 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: