In U.S. Midwest, 22F 'feels like spring' after days of brutal cold

CHICAGO/NEW YORK (Reuters) - Bone-chilling cold that paralyzed a chunk of the United States this week and killed at least 18 people eased on Friday as an errant Arctic air mass retreated ahead of a warmer-than-normal weekend in areas of the Midwest and Northeast. In Chicago, where the mercury dipped as low as minus 22 Fahrenheit (minus 30 Celsius) this week, temperatures of 22F (minus 5.5C) by Friday afternoon felt balmy for some in the nation's third-largest city. "It's got to be an almost 50 degree difference, it feels like spring," said one commuter heading home from Chicago's downtown financial district, wearing only a sweatshirt.

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