This post was inspired by the winter of 2016, when the high reached 61° on Feb. 20, six days after a frigid low of -1° (the only sub-zero reading so far this century). In researching other big rebounds following a sub-zero reading I uncovered one that was even more dramatic. It occurred in February 1943 when the temperature soared to 63° just five days after a low of -8° (the first of five days in a row in the 60s). However, winter 2016 can lay claim to a tie for the quickest rise to 50° after a sub-zero - two days later (it also happened in the winters of 1934 and 1918). The chart below looks at the shortest and longest rebounds to temperatures in the 50s since 1900.