Much of the sun's energy that does reach the ground is reflected by snow and ice, and therefore is not used to warm up the tundra.
Geographers call the ability to reflect sunlight albedo.
This is 6 o C colder than other places at the same latitude around the world. Hudson Bay plays a big part in our cold climate. To Convert Farenheit Temperatures to Celsius Temperatures which are used in Churchill, use the boxes below. Enter a number in either field, then click outside the text box.