As Christmas approaches, the potential for snow varies significantly across the United States. Meteorologists indicate that much of the Midwest and Northeast may experience a reduction in existing snowpack due to rising temperatures. However, some northern regions might maintain their snow cover through the holiday. The most promising chances for fresh snowfall are in higher altitude areas such as the northern Rockies, the Great Lakes region, and parts of New England, where lake-effect snow and colder air masses are conducive to snowfall.