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Typical weather in Chicago, IL (Illinois), USA on July 29

High Temperatures

On July 29 in Chicago, IL (Illinois), USA the average high temperature is 83.1 °F (28.4 °C). The lowest recored high temperature was 66.7 °F (19.3 °C) in 2013 and the highest recored high temperature was 100.0 °F (37.8 °C) in 1983. The high temperature is usually* between 78.6 °F (25.9 °C) and 87.6 °F (30.9 °C). About a quarter of the time, the high temperature is less than 78.6 °F (25.9 °C), and another quarter of the time, the high temperature is greater than and 87.6 °F (30.9 °C). About 95% of the time, the high temperature has been between 70.1 °F (21.2 °C) and 96.1 °F (35.6 °C).

Low Temperatures

On July 29 in Chicago, IL (Illinois), USA the average low temperature is 66.9 °F (19.4 °C). The lowest recored low temperature was 50.0 °F (10.0 °C) in 1984 and the lowest recored low temperature was 81.5 °F (27.5 °C) in 2025. The low temperature is usually* between 62.9 °F (17.2 °C) and 71.0 °F (21.7 °C). About a quarter of the time, the low temperature is less than 62.9 °F (17.2 °C), and another quarter of the time, the low temperature is greater than and 71.0 °F (21.7 °C). About 95% of the time, the low temperature has been between 55.2 °F (12.9 °C) and 78.7 °F (25.9 °C).

Frost

On July 29 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: