This week, the eastern United States will experience significant temperature fluctuations. The Northern Plains will see a dramatic drop in high temperatures, plummeting by 30 degrees by Wednesday, before a brief rebound on Thursday. Simultaneously, the Great Lakes and Southeast regions will face a sharp plunge in temperatures, with cold air pushing wind chills into the teens as far south as Alabama and Georgia. These rapid swings highlight the unpredictable nature of winter weather, with daily highs and lows subject to abrupt changes across the region.