December 30 - Chicago - Weather History and Averages

High Temperatures

On December 30 in Chicago, IL (Illinois), USA the average high temperature is 35.0 °F (1.7 °C). The lowest recored high temperature was 6.3 °F (-14.3 °C) in 1976 and the highest recored high temperature was 60.8 °F (16.0 °C) in 2002. The high temperature is usually* between 28.1 °F (-2.1 °C) and 41.9 °F (5.5 °C). About a quarter of the time, the high temperature is less than 28.1 °F (-2.1 °C), and another quarter of the time, the high temperature is greater than and 41.9 °F (5.5 °C). About 95% of the time, the high temperature has been between 15.1 °F (-9.4 °C) and 55.0 °F (12.8 °C).

Low Temperatures

On December 30 in Chicago, IL (Illinois), USA the average low temperature is 22.3 °F (-5.4 °C). The lowest recored low temperature was -14.1 °F (-25.6 °C) in 1983 and the lowest recored low temperature was 48.0 °F (8.9 °C) in 2006. The low temperature is usually* between 14.7 °F (-9.6 °C) and 30.0 °F (-1.1 °C). About a quarter of the time, the low temperature is less than 14.7 °F (-9.6 °C), and another quarter of the time, the low temperature is greater than and 30.0 °F (-1.1 °C). About 95% of the time, the low temperature has been between 0.1 °F (-17.7 °C) and 44.6 °F (7.0 °C).

Frost

On December 30 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 80.3% 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: