Evaporation is a cooling process that takes heat away from our bodies and transfers it to the air around us in a latent form. It is simply the reason you feel cool when you jump out of a swimming pool or step out of the shower in the morning. Millions of water molecules are escaping from your skin into the air as water vapor. Water vapor is a gas that you cannot smell, yet it is present in the atmosphere in large quantities. That quantity varies with the temperature.
Warm air is capable of holding more water vapor than cold air.
For example, air at 60 degrees Fahrenheit can hold over twice as much moisture as air at 41 degrees Fahrenheit. At 95 degrees that factor is seven times as much. That is why the term is called relative humidity. The same amount of moisture in air at 41 degrees will have a different humidity than if it was in air at 95 degrees. The more moisture there is in the air, the greater the vapor pressure or more simply the pressure exerted by those water vapor molecules.