Why is the weather dry in winter?

1. Low-temperature water vapor condenses, and all water vapor in the air is taken away.

2. When plant leaves fall off (or stomata are closed), transpiration is reduced and water vapor entering the atmosphere is reduced.

3. The low-temperature evaporation rate decreases, and the amount of water vapor in the air decreases.

4. In winter, the land wind in my country is mostly northwest wind - the wind blowing from the dry northwest land contains less water vapor and will also take away the local water vapor.