answers: May
context: of the city's five biggest recorded snowstorms despite it occurring past the vernal equinox. The average date for last measurable snowfall (≥) is April 1. Temperatures vary tremendously in the springtime; at , March is the month with the greatest span between the record high and low. At O'Hare, temperatures as low as and have been recorded as late as April 7 and May 21, respectively. Conversely, in official records, the earliest triple-digit () high occurred on June 1, 1934, when official readings were taken closer to Lake Michigan. Though rare, triple-digit heat has occurred in late May at Midway </s> the National Weather Service. This station averages over per season. Even farther north, a ski resort called Mount Bohemia receives an unofficial annual average of . Herman, Michigan, averages of snow every year. Lake-effect snow can cause blinding whiteouts in just minutes, and some storms can last days. Western Michigan, western Northern Lower Michigan, and Northern Indiana can get heavy lake-effect snows as winds pass over Lake Michigan and deposit snows over Muskegon, Traverse City, Grand Rapids, Kalamazoo, New Carlisle, South Bend, and Elkhart, but these snows abate significantly before Lansing or Fort Wayne, Indiana. When winds become northerly, or </s> occurs on October 24 at Midway and 11 days earlier at O'Hare. In most years, a period of warm weather, known as an Indian summer, occurs well after the autumnal equinox has occurred. In these so-called Indian summers, unusually warm weather can persist for several days well into October, and in particularly warm autumns, into November. For example, during the 2005 American League Division Series, for both home games between the Chicago White Sox and the Boston Red Sox, temperatures soared to near , despite the fact that it was already well into October. On top of that, during the
question: when does it usually stop snowing in chicago