Second National Communications 4 We know that weather (for the short term), which is climate in the long term, has had its effects on the human body and has spelled the rise and fall of human health populations. While the four climate parameters of temperature, humidity, precipitation and wind affect climate change impacts on health, it seems that temperature and rainfall may be the predominant factors that mediate the other parameters. Source: http://www.who.int/globalchange/climate/summary/en/