Chicago Weather In August

The highest recorded temperature in August for Chicago Illinois for the past 52 years was 101 degrees Fahrenheit, on August 28, 1991, while the normal high temperature is 81. In the last 52 years the highest reported temperature in Chicago for August was 41 measured on August 29, 1965, and the typical low is 62.

United States NWS historical Chicago August Weather data records that on August 11, 2004, the high temperature did not exceed 62 degrees Fahrenheit, the lowest high measured in Chicago in the past 52 years. Weather Service data also shows that on August 1, 2006, the lowest recorded temperature for the day did not drop below 80 degrees, the highest low measured temperature in Chicago in the last 52 years.

National Weather Service records indicate that the high temperature in Chicago on August First averages 84 degrees and the high on the last day of the month averages 80 degrees. The low temperature in Chicago in August on the first day of the month averages 64 degrees and the low temperature on the last day of the month averages 60 degrees.

Chicago normally receives an average of 4.62 inches of rain during August. The most rain recorded in a single day, as shown by August Chicago Weather data, was 6.49 inches on August 26, 1987.