Cold temperatures and humidity

What you see on the thermometer at home is what we call the dry bulb temperature. In the world of physics, there are no cold temperatures, only heat, more heat or less heat. In simple terms, this means that the lower the humidity, the more snow that can be produced at a given temperature.

Roughly speaking, the equation for humidity works like this: When your thermometer reads +32° C and the relative humidity is 40% you will feel much colder than if it were +29° C and 95% relative humidity. The simple explanation for this is that: your body gives off more heat through evaporation when the surrounding air is drier. Simple isn't it?

It follows then that water particles from a fan gun will become colder quicker the lower the humidity is.

What is more, we get a value called "wet bulb" through a non-linear equation based on the values for a dry bulb and the relative humidity. For example, when the relative humidity is 100% , the dry bulb and wet bulb temperatures are identical. But if the air is drier than 100% the wet bulb temperature will be lower than for the dry bulb.