Why is it cold and the air becomes dry?

When the weather is cold, water in the air condenses into raindrops. Because the temperature is low, the transpiration of plants slows down, and the natural evaporation of water also slows down, so there is less and less water vapor in the air, resulting in dry air. As for people's discomfort, I think it is because most of the human body is made up of water, and in dry weather, the water in the body is also losing a lot. Let's react normally. It's time to hydrate and moisturize.