Why does the temperature commonly become warmer when it snows?

I don't have a link for this, but I think it ties in to the fact that if air contains moisture it's typically warmer.

So, when it isn't snowing the air is colder, but say some snow moves in -- that implies that the air moving in is actually warmer (even though it may only be by a few degrees).

"Very cold air can't hold a lot of moisture- it is very difficult to find freezing and humid environments.

(The excess moisture that is present actually gets deposited as frost.)

Warm air can hold more moisture (think of humid summer days)
So when warmer air -holding more moisture- moves into cooler areas, the water molecules turn into snow!

So to sum up- it gets warmer when it snows because the snowfall is a result of the current cold dry air you are feeling -being hit by a warm puff of moisture- lowering the temperature and causing snow!"

http://wiki.answers.com/Q/Does_it_get_warmer_when_it_snows