September off to a hot start – but will cool off soon

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Do you get the feeling this September has gotten off to a warm start? Well, you are spot on!

 

In fact, the opening week of September has averaged 79.6 degrees, which is a stunning 10.7 degrees above normal and good enough to rank as the 4th  warmest such period here in 145 years of weather records dating back to 1871. Not since 1960 has a September opened any warmer in Chicago.

 

 

Here is the top 5 warmest September opens:

 

  1.  83.6  1960
  2.   82.4  1922
  3.   79.7  1912
  4.   79.6  2015
  5.   79.4  1925

If you’re sick of the heat and humidity there is good news. A slow moving cold front will bring waves of showers and thunderstorms through tomorrow, some of the heavier storms are capable of producing locally heavy downpours. Much cooler and less humid air arrives Wednesday through the rest of the week with highs settling back to the 70s.

Updates at Chicago Weather Center.