Tuesday’s weather was a firm reminder that winter lies just around the corner. After an early-morning hard freeze (the first of the season in the Chicago area), the temperature struggled only to an afternoon high of 42 degrees. That was the city’s coldest daytime reading in six months – since 40 degrees on April 19.
Tuesday also brought the first snow of the season. O’Hare International Airport officially reported a trace of snow, and that was representative of most of the city area. However, while afternoon temperatures hovered near 40 degrees in the city and to the north and west, readings well to the south and southwest of Chicago held in the 30s. That was cold enough for snow. Locations in LaSalle and Kendall Counties reported slushy accumulations. Peru (86 miles southwest) had an inch and Mendota (80 miles southwest) two inches.