Dear Tom,
Summers in the 1930s were very hot. What was the tally of “century days” in those years?
–Paul Sarewich, Chicago
Dear Paul,
When it comes to 100- degree occurrences in Chicago, the decade of the 1930s yielded a bumper crop of 100-degree days unrivaled in the city’s 139 years of documented weather history. From 1930 through 1939, 37 “century days were registered at Midway Airport. And in the 1930s, two summers stand out: 1934 and 1936. Each recorded 11 days of 100-degree heat that were without precedent in two dangerous aspects, duration and intensity–six consecutive 100-degree days, July 20 to July 25, 1934; and eight consecutive days, July 7 through 14, 1936. The daily highs during the 1934 period were 103, 108, 104, 109, 107 and 105, and in 1936 the highs were 102, 106, 100, 106, 107, 100, 102 and 104.
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