April Heat in the Early 1960s

Dear Tom,
I remember a very warm late April in Chicago when I was a boy in the early 1960s. Can
you tell me what year that was?
Robert Klein
Dear Robert,
We believe the period you remember occurred during late April 1962. After two warm
days in the lower 70s in March, April opened on a cool note, with the high temperature
reaching only the lower 40s on April 1 and 2. The month remained cool for the first
three weeks. Warm weather finally moved into the area April 20, when the mercury
soared to 80 degrees and remained entrenched for the rest of the month. The
temperature climbed to a summerlike 86 degrees April 25, followed by highs of 88 and
86 the next two days as persistent southwest winds pumped very warm air into the city.
After a two-day cool-down to around 70, readings surged back to a steamy 88 degrees
on the last day of the month.