since skyrim has snow physics will i be able to do the things that i normally do outside during the winter inside my comfy warm house. if someone makes a snowmobile mod i wont have to go outside in winter ever again.

Yes. The fury of the dragons will stand no match against your snowy balls.

I don't think is has snow "physics" just dynamic snow textures, like some areas of the ground will have snow at different times depending on the weather.

Anyone besides me planning on throwing snowballs at fire breathing dragons?

I will make a snowman companion... or just do http://www.youtube.com/watch?v=Mwb6st5BLL0.