How does the difference between Chicago’s average daily high and low temperature…

Pricey Tom,
How does the distinction between Chicago’s common day by day excessive and low temperature differ between summer time and winter? What are the extremes?
—Terry Costlow Morton Grove
Pricey Terry,
Evaluating the typical temperatures on the warmest and coldest occasions of the yr, the standard winter span is 15 levels within the Jan. eleven-26 interval, with a mean excessive/low of 31/sixteen. That distinction will increase to 21 levels within the July 9-15 time-frame, with a mean excessive/low of eighty five/sixty four. We had Chicago climatologist Frank Wachowski verify the historic extremes, and he famous that the best calendar day excessive/low unfold was fifty two levels on Feb. eight, 1900, when the mercury dropped to 10 after a excessive of sixty two. The least is zero, recorded simply as soon as on Feb. 6, 1942, with a excessive/low of 35/35. That rarity occurred throughout a 30-hour interval of unchanged temperatures from 9 p.m. Feb. 5 by means of three a.m. Feb. 7.

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