Chicago Weather In September

The highest recorded temperature in September for Chicago Illinois for the past 47 years was 22 degrees Celsius, measured on September 25, 1982, and the typical high is 23. The record low September temperature in Chicago for the last 47 years was -32 registered on September 18, 1983, and the typical low is 12.

US National Weather Service Chicago September Weather data records that on September 23, 1983, the high temperature did not exceed -24 degrees Celsius, the lowest high measured in Chicago in the past 47 years. Weather Service records also indicate that on September 1, 1982, the low temperature for the day was not measured below 14 degrees, the highest low measured in Chicago in the last 47 years.

National Weather Service records indicate that the high temperature in Chicago on September First averages 4 degrees and the high on the last day of the month averages 1 degrees. The average daily low temperature in Chicago on September First is -4 degrees Celsius and the average low on the last day of September is -8 degrees.

Chicago usually receives an average of 8.31 centimeters of precipitation during the month. The most precipitation measured in a single day, as indicated by September Chicago Weather data, was 11.35 centimeters on September 25, 1982.