On paper the high temperature on Tuesday was balmy, 61 degrees at Midway and 58 at O’Hare. But that was at midnight before temps went into free-fall.
Cold air accompanied by a chilly rain and gusty northwest winds poured into the Chicago. By evening the mercury had tumbled into the lower 30s headed for the middle 20s by Wednesday morning.
The early-season cold snap is expected to stick around for more than a week as the city prepares to shiver through one of its coldest mid-November periods in history.
High temperatures will moderate slightly to the middle 30s on Saturday, but the meager warm-up will come at a price, bringing a threat of the season’s first sticking snow Saturday night into Sunday morning just ahead of a reinforcing surge of polar air that should keep daytime highs in the sub-30s next week.