May 22,

Understanding Wind Chill

Understanding Wind Chill

Wind chill is a term used to describe the cooling effect caused by the combined effect of temperature and wind. When the temperature is -10 °C and the wind chill is -20, you will feel as cold as you would on a calm day when the temperature is -20 °C.
The wind makes you feel colder by evaporating any moisture on your skin – a process that draws more heat away from your body.  As the speed of the wind increases, it can carry heat away from your body much more quickly, causing skin temperature to drop.

Listen for Environment Canada’s weather forecasts and wind chill warnings. In most of southern Canada, a wind chill is included in the forecast when it reaches -25, the point where frostbite becomes a risk. When there are high winds, serious weather-related health problems are more likely, even when temperatures are only cool.

Wind Chill

Last modified on Aug 21, 2012