Cool streek a record setter.
The chilly weather moved into record-setting territory this weekend, with Chicago experiencing one of the longest stretches of cool weather this early in the fall.
According to the National Weather Service, Sept. 11, 12 and 13 were the earliest that the Chicago area  has experienced highs lower than 60 for three consecutive days since it began tracking this kind of data in 1871.
 Thursday's high was 56 (a record low high for that date), followed by a 55-degree high on Friday and a 59-degree high on Saturday
 Saturday's low of 41 at O'Hare International Airport was only two degrees above the record low for that date, and Friday's low of 44 tied the record low for that date.
 Before this week, the earliest Chicago had experienced such a stretch was from Sept. 13-15 in 1923, according to the weather servcie. Last year was close – Sept. 14-16.
The longest streak of days with highs below 60 is six. That occurred Sept. 17-22 in 1875, the weather service said.
Temperatures have already reached into the 60s Sunday, so this streak ends today. Highs in the 60s and 70s are part of the forecast for the rest of the week, according to WGN-TV meteorologist Tom Skilling, who says an 80-degree high is possible Saturday.
Rain is in the forecast for Monday morning and afternoon, but the rest of the week looks dry, according to Skilling.

http://www.chicagotribune.com/news/local/breaking/chi-chicago-weather-forecast-records-20140914-story.html