Apparently the United States, land of the most complete and sophisticated weather measurement and recording systems, has decided to pass on global warming, and Chicago is only one of many measurement points that are not cooperating with the United Nations global warming alarmists.
I'm sure that Al Gore and the Alarmists are going to find that Chicago's cooler summers are another sign that man-caused global warming has taken firm hold. True believers interpret everything to support their beliefs.
Decade has had fewest 90-degree days since 1930, By Tom Skilling, Chicago Tribune, August 13, 2008
Of course everyone remembers Al Gore and his Acolytes getting all over the Category 3 hurricane that hit New Orleans, citing it as proof positive that the Warming was upon us.
August is the wettest and often the muggiest month of the year. Yet, summer heat continues in short supply, continuing a trend that has dominated much of the 21st Century's opening decade. There have been only 162 days 90 degrees or warmer at Midway Airport over the period from 2000 to 2008. That's by far the fewest 90-degree temperatures in the opening nine years of any decade on record here since 1930.This summer's highest reading to date has been just 91 degrees. That's unusual. Since 1928, only one year—2000—has failed to record a higher warm-season temperature by Aug. 13.
That is why this linked article should be of interest. It shows steadily decreasing hurricane strength since 2004, and that:
During 2007, the Northern Hemisphere as a whole experienced the lowest ACE hurricane energy & number of hurricane days since 1977. 2007 was the 4th slowest year in the past half-century (since 1958)...