What is the warmest temperature recorded in Chicago on the same calendar day that it snowed? I’ve seen it go from 60 degrees and rain to 30 and snow in a matter of hours!
— Austen Shock,
At first glance, mild temperatures and days with snow might seem to be mutually exclusive events, but they are not.
A search through years (1884-2012) of Chicago’s temperature and snowfall history yields some surprises, but none greater than the weather events of April 22, 1910. After peaking at 65 degrees with rain, a blast of arctic air sent readings plunging to 35 degrees and snow that accumulated to one-tenth of an inch.
In all, the search yielded 10 additional days whose high temperature was at least 60 degrees followed by measurable snow.