Why did the snow become obsolete when the community went to Sameness?
In the community, everything exists for a reason and everything is tightly controlled. They have somehow figured out how to control the weather, although it is clear that outside the community there is snow. Inside the community, there is no weather at all. The only use for snow is as a source of amusement or water, and they have all the water they need and don’t really believe in amusement. There is no rain, or snow. It doesn’t get hot and it doesn’t get cold. They would not be able to control the snow, so if there is no need to have it at all then having it would be dangerous.
In the book "The Giver" all aspects of the community's life are controlled. The climate is controlled, the clothing is controlled, the food intake is controlled. Having snow would mean that there would be some difficulties associated with it. For example, transportation would become more difficult if snow existed. In addition, the people no longer have their normal body sensations. They do not feel the difference between hot and cold. We learn this when the giver passes his first memory to Jonas. He feels pin pricks on his body as he begins to experience cold. Snow is an inconvenience that the elders have chosen to do away with.