Why always feel body feeling temperature below forecast?

Cold! Why always feel body feeling temperature below forecast? A lot of friends have such doubt: the weather forecast of differences between the temperature and the temperature of the human body actually felt. Why always feel body feeling temperature below forecast? Especially in the cold winter, this kind of feeling all the more obvious. Why is this case? The body feeling temperature and the temperature of the weather forecast are different concepts. The weather forecast of high temperature pure is 1. The temperature of 5 meters high. In the same temperature conditions, people will because of the humidity, wind speed, solar radiation ( Or insolation) , as their recognized color, and even the mood varies in different ways, such as changes in temperature. Refers to a person feel body feeling temperature the temperature of the hot and cold feeling, cannot simply be understood as human skin temperature. Because the body feeling temperature is affected by four factors: one is the temperature, is the temperature of the weather forecast; Second, humidity, most of the time temperature is higher, but the humidity is small, the body does not feel uncomfortable, because human body moisture evaporate by high temperature and relatively dry; Third, wind speed, can make the person feel the air flow in a certain wind speed, body emitting heat were blown away from the body surface, although temperature is higher, but the comparison is dry; Fourth, radiation, solar radiation directly to the people, will feel uncomfortable, if under the shade or canopy, feeling is completely different with the sun direct radiation, generally cloudy and sunny days are 4 ~ 6 ℃, the temperature of the even bigger. Surface radiation, if say standing in the place where the surface is hot, hot steam steaming on the surface of the earth person, if the surface is relatively cool water or wetland, body feeling temperature is very different.