Dear Tom,
What was the biggest blizzard Chicago has ever had?
Bradley Kotrba, Rolling Meadows

Dear Bradley,

Chicago’s official snow record begins on November 1, 1884. In the more than 137 years since, the biggest snowstorm has been the one that occurred on January 26-27, 1967, when heavy snow fell. 23.0 inches at Midway Airport (the site for Chicago’s official weather record at the time). At O’Hare International Airport, 20.4 inches fell, and across the city of Chicago, total snowfall ranged from 18 to 24 inches. As we move into mid-April, the chance of more snow will lessen, but it’s still possible. In fact, from May 1 onwards until the end of the snow season, it snowed for 5 years: 1888, 1909, 1911, 1929 and 1940. The heaviest was 1.6 inches on May 1, 1940.

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