Sault Ste. Marie, Ontario the locks. An anti-aircraft training facility was established north of Sault Ste. Marie on the shores of Lake Superior. Barrage balloons were installed, and early warning radar bases were established at five locations in northern Ontario (Kapuskasing, Cochrane, Hearst, Armstrong (Thunder Bay District), and Nakina) to watch for incoming aircraft. Military personnel were established to guard sensitive parts of the transportation infrastructure. A little over one year later, in January 1943, most of these facilities and defences were deemed excessive and removed, save a reduced military base at Sault Ste. Marie. The first "Algerine"-class minesweeper in the Royal Canadian Navy
Sault Ste. Marie, Michigan snow a year, with a record year when fell. of snow fell in one five-day snowstorm, including in 24 hours, in December 1995. Over the winter of 2015, Sault Ste. Marie received 158.7 inches of snow, ranking it the most snowfall measured in the nation that year. Sault Ste. Marie receives an average annual of precipitation measured as equivalent rainfall. Its immediate region is also the cloudiest in Michigan's Upper Peninsula, having over 200 cloudy days a year. Temperatures in Sault Ste. Marie have varied between a record low of and a record high of . Monthly average temperatures range