Context: In Chicago, it was -3 F at the beginning of the week, 38 F (high) the day before yesterday and now it's back to 31 F (current). It also snowed for most

Context: In Chicago, it was -3 F at the beginning of the week, 38 F (high) the day before yesterday and now it's back to 31 F (current). It also snowed for most of the past week and a half and there was still a thick layer of snow until it melted yesterday. Chicago's weather already has a relatively large swing from season to season, but it also has flukes like yesterday from time to time.