History tells us 70° warmth in the rear view mirror for a while




December 3rd marked the date of the city’s latest-in-the-year 70-degree day, occurring on two occasions since 1871, first in 1970 and again in 2012. The earliest-in-the-year occurrence was in 1999 on February 11. Barring an unprecedented surge of warmth, Chicagoans can reasonably expect more than two months to elapse until the city’s next 70° day.

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