Can you explain wind chill?

The wind chill is an index set up for human comfort, based on heat transfer theories between the air and body as well as skin exposure. 

We all have a very thin layer of air just above our skin that helps insulate our body against the cold. When we expose our skin to windy conditions during the winter, that layer of air is displaced. That exposes the skin to the harsh winter air. If the temperature was to only reach 22 degrees with a wind of 15 mph, that would produce a wind chill of 9 degrees. 

If you want to calculate the wind chill as we go through the winter months log onto www.noaa.gov.