I'm in an area full of snow, does that mean it will only snow, or is there a possibility of rain?
Is an area with ice or snow guaranteed to have snow fall? If not, what decides what weather the area has? Is there a way to tell what weather you will get in an area without having to wait and see?
EDIT: So, going by the accepted answer, this shouldn't be happening?
Clearly, it can rain on areas that were covered by snow.