Climate of Canada

warm, dry wind in North America

Atmospheric phenomenon

thumb|upright=2|Plot of humidex depending on temperature and relative humidity The humidex (short for humidity index) is an index number used by Canadian meteorologists to describe how hot the weather feels to the average person, by combining the effect of heat and humidity. The term humidex was coined in 1965. The humidex is a nominally dimensionless quantity (though generally recognized by the public as equivalent to the degree Celsius) based on the dew point.

thumb|Map showing the snowbelts around the Great Lakes of North America with accumulations or more during winter|alt=|400x400px The Snowbelt, Snow Belt, Frostbelt, or Frost Belt is the region near the Great Lakes in North America where heavy snowfall in the form of lake-effect snow is particularly common. Snowbelts are typically found downwind of the lakes, principally off the eastern and southern shores.