September 2023 Climate Recap

Overview & Graphics

September 2023 Monthly Climate Summary Graphic

Chicago and Rockford Monthly Summary

Public Information Statement

National Weather Service Chicago IL

858 AM CDT Sun Oct 1 2023 /958 AM EDT Sun Oct 1 2023/

...A Look Back at the Climate for the Month of September 2023 for

Chicago and Rockford...

At Chicago, the average high temperature was 77.7 degrees, which

is 2.2 degrees above normal. The average low temperature was

61.2 degrees, which is 4.1 degrees above normal. The average

temperature for the month was 69.5 degrees, which is 3.2 degrees

above normal. 3.36 inches of precipitation were recorded, which

is 0.17 inches above normal.

There were no daily or top ten monthly records set for Chicago

during the month of September 2023.

At Rockford, the average high temperature was 77.4 degrees, which

is 2.1 degrees above normal. The average low temperature was

56.6 degrees, which is 3.1 degrees above normal. The average

temperature for the month was 67.0 degrees, which is 2.6 degrees

above normal. 2.19 inches of precipitation were recorded, which

is 1.43 inches below normal.

There were no daily or top ten monthly records set for Rockford

during the month of September 2023.

Latest Monthly Climate Report: Chicago | Rockford

Events

September 17, 2023: Significant flash flooding in the near south suburbs of Chicago