February 17 - Chicago - Weather History and Averages

High Temperatures

On February 17 in Chicago, IL (Illinois), USA the average high temperature is 36.6 °F (2.5 °C). The lowest recored high temperature was 3.9 °F (-15.6 °C) in 1958 and the highest recored high temperature was 68.0 °F (20.0 °C) in 2017. The high temperature is usually* between 29.7 °F (-1.3 °C) and 43.4 °F (6.3 °C). About a quarter of the time, the high temperature is less than 29.7 °F (-1.3 °C), and another quarter of the time, the high temperature is greater than and 43.4 °F (6.3 °C). About 95% of the time, the high temperature has been between 16.7 °F (-8.5 °C) and 56.4 °F (13.6 °C).

Low Temperatures

On February 17 in Chicago, IL (Illinois), USA the average low temperature is 22.2 °F (-5.4 °C). The lowest recored low temperature was -11.0 °F (-23.9 °C) in 1958 and the lowest recored low temperature was 48.2 °F (9.0 °C) in 2011. The low temperature is usually* between 14.9 °F (-9.5 °C) and 29.5 °F (-1.4 °C). About a quarter of the time, the low temperature is less than 14.9 °F (-9.5 °C), and another quarter of the time, the low temperature is greater than and 29.5 °F (-1.4 °C). About 95% of the time, the low temperature has been between 1.0 °F (-17.2 °C) and 43.4 °F (6.3 °C).

Frost

On February 17 in Chicago, IL (Illinois), USA expect the temperatures to drop below freezing for a risk of frost about 81.8% 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: