May 30 - Chicago - Weather History and Averages

High Temperatures

On May 30 in Chicago, IL (Illinois), USA the average high temperature is 75.5 °F (24.2 °C). The lowest recored high temperature was 52.0 °F (11.1 °C) in 1990 and the highest recored high temperature was 91.9 °F (33.3 °C) in 2022. The high temperature is usually* between 69.3 °F (20.7 °C) and 81.6 °F (27.6 °C). About a quarter of the time, the high temperature is less than 69.3 °F (20.7 °C), and another quarter of the time, the high temperature is greater than and 81.6 °F (27.6 °C). About 95% of the time, the high temperature has been between 57.7 °F (14.3 °C) and 93.3 °F (34.0 °C).

Low Temperatures

On May 30 in Chicago, IL (Illinois), USA the average low temperature is 55.5 °F (13.1 °C). The lowest recored low temperature was 34.3 °F (1.3 °C) in 1964 and the lowest recored low temperature was 73.4 °F (23.0 °C) in 2013. The low temperature is usually* between 49.8 °F (9.9 °C) and 61.3 °F (16.3 °C). About a quarter of the time, the low temperature is less than 49.8 °F (9.9 °C), and another quarter of the time, the low temperature is greater than and 61.3 °F (16.3 °C). About 95% of the time, the low temperature has been between 38.9 °F (3.8 °C) and 72.1 °F (22.3 °C).

Frost

On May 30 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 0.3% 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: