High temperature at O'Hare coolest for Sept. 11 since 1940

A man wears a hooded sweatshirt while waiting for an early bus in downtown Chicago on Thursday morning. (Tribune photo)

Chicago appears to have set a record for coldest high temperature for this date as autumn weather settles in for the next several days.

Prior to today, the lowest high temperature recorded for Sept. 11 was 61 degrees in 1940. The forecast today had been for the high to reach 60 degrees at O’Hare International Airport, but as of 4 p.m., the temperature had reached only 56 -- at 1 a.m. After falling overnight and this morning to 50 degrees at 8 a.m., temperatures only inched up as the day wore on, reaching 53 at 3 p.m.

The cold front moved through the Chicago area late Wednesday, causing temperatures to fall up to 8 degrees an hour, the weather service said.
“Eight degrees in an hour is pretty significant. And the winds at that time, they were 25, 30 mph, so it felt cool,” weather service meteorologist Kevin Donofrio said.

http://www.chicagotribune.com/news/local/breaking/chi-chicago-weather-20140911-story.html