Does Lake Superior freeze in the winter?
Because the lake is so big and so deep, it is slow to warm up in summer and to cool down in the winter. In sheltered bays and areas with many islands, the lake will freeze over nearly every year. However, the open areas of the lake seldom freeze over completely. The lake froze completely in the winter of 1995-96. In more recent years, the lake has nearly frozen over, but ironically open water remained along the Minnesota North Shore, due to strong northwest winds blowing out the ice cover.
