Wind Chill Calculator and Information

How is the Windchill is calculated?

The windchill temperature is calculated using the following formula:

Windchill (ºF) = 35.74 + 0.6215T - 35.75(V^0.16) + 0.4275T(V^0.16)

Where: T = Air Temperature (F) V = Wind Speed (mph) ^ = raised to a power (exponential)

Windchill Temperature is only defined for temperatures at or below 50 degrees F and wind speeds above 3 mph. Bright sunshine may increase the windchill temperature by 10 to 18 degrees F.

Why do windy winter days seem so bitterly cold?

A winter day with a strong wind can seem much colder than one with only a mild wind, though the air temperature may be exactly the same. The effect that wind has on our perception of cold is called the wind chill factor. The greater the wind speed, the faster we lose body heat. Wind chill can make a fairly moderate winter day equivalent to a much colder one - sometimes dangerously so.

Try it yourself. Calculate the wind chill factor for various combinations of temperature and wind speed using the calculator below.

This windchill chart is for temperatures in

CELSIUS and wind speed in KILOMETERS per hour....