Has it ever snowed in the May-through-August period in the Chicago metro area?

Dear Tom,
Has it ever snowed in the May-through-August period in the Chicago metro area?
— Paul Crimo, Highwood
Dear Paul,
It has, but only in the early part of the period. While certainly not common, Chicago has logged snow in May in 30 years dating back to 1885, most recently in 2005. In the overwhelming majority of those years, only a trace of snow was recorded, but measurable snow has fallen in nine Mays, most recently 0.5 inches on May 6, 1989. The city’s largest May snowfall was 2.2 inches on May 1-2, 1940, and the latest measurable snowfall was 0.2 inches on May 11, 1966. There has been only one instance of snow in June, a trace that fell on June 2, 1910. Snow has never been observed in Chicago in July and August, with the earliest start to the fall snow season being traces that fell on Sept. 25 in 1928 and 1942.