August 8 - Chicago - Weather History and Averages

High Temperatures

On August 8 in Chicago, IL (Illinois), USA the average high temperature is 82.8 °F (28.2 °C). The lowest recored high temperature was 66.0 °F (18.9 °C) in 1972 and the highest recored high temperature was 100.0 °F (37.8 °C) in 1988. The high temperature is usually* between 78.9 °F (26.0 °C) and 86.7 °F (30.4 °C). About a quarter of the time, the high temperature is less than 78.9 °F (26.0 °C), and another quarter of the time, the high temperature is greater than and 86.7 °F (30.4 °C). About 95% of the time, the high temperature has been between 71.4 °F (21.9 °C) and 94.2 °F (34.5 °C).

Low Temperatures

On August 8 in Chicago, IL (Illinois), USA the average low temperature is 66.2 °F (19.0 °C). The lowest recored low temperature was 46.9 °F (8.3 °C) in 1976 and the lowest recored low temperature was 80.8 °F (27.1 °C) in 2025. The low temperature is usually* between 62.6 °F (17.0 °C) and 69.9 °F (21.0 °C). About a quarter of the time, the low temperature is less than 62.6 °F (17.0 °C), and another quarter of the time, the low temperature is greater than and 69.9 °F (21.0 °C). About 95% of the time, the low temperature has been between 55.7 °F (13.2 °C) and 76.7 °F (24.9 °C).

Frost

On August 8 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: