Answer: windchill

AnswerCrossword Clue
WINDCHILLWeather factor
WINDCHILLFreezing weather factor
windchillA quantity expressing the effective lowering of the air temperature caused by the wind, esp. as affecting the rate of heat loss from an object or human body or as perceived by an exposed person
windchillthe cooling effect that wind has as it blows on a surface