Black is a color that can absorb all kinds of light, so in that case ... the weather should be darker.
In addition, black things will absorb heat, so they may melt quickly.
On the whole, the above conditions are similar. ..
When black snow falls, the weather may get darker and colder than usual, but it won't last long ... it feels like the end of the world.
If you feel it intuitively, you can just throw a handful of coal ash into the sky, hhh.