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Typical weather in Chicago, IL (Illinois), USA on April 30

High Temperatures

On April 30 in Chicago, IL (Illinois), USA the average high temperature is 63.7 °F (17.6 °C). The lowest recored high temperature was 42.1 °F (5.6 °C) in 1956 and the highest recored high temperature was 88.0 °F (31.1 °C) in 1962. The high temperature is usually* between 56.5 °F (13.6 °C) and 70.9 °F (21.6 °C). About a quarter of the time, the high temperature is less than 56.5 °F (13.6 °C), and another quarter of the time, the high temperature is greater than and 70.9 °F (21.6 °C). About 95% of the time, the high temperature has been between 42.8 °F (6.0 °C) and 84.7 °F (29.3 °C).

Low Temperatures

On April 30 in Chicago, IL (Illinois), USA the average low temperature is 45.4 °F (7.4 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 2008 and the lowest recored low temperature was 66.9 °F (19.4 °C) in 1970. The low temperature is usually* between 40.5 °F (4.7 °C) and 50.2 °F (10.1 °C). About a quarter of the time, the low temperature is less than 40.5 °F (4.7 °C), and another quarter of the time, the low temperature is greater than and 50.2 °F (10.1 °C). About 95% of the time, the low temperature has been between 31.3 °F (-0.4 °C) and 59.5 °F (15.3 °C).

Frost

On April 30 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 3.2% 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: