It was far too cold.

If it weren't for the gratuitous amount of winter-wear that XIII had been provided with, he wouldn't have been able to help with the snow removal. He made sure that not much, if any, skin was exposed to the cold, and the lack of bite told him that he was successful in that part. He was glad for the warmth that his clothing provided. Glancing around the room, he noticed that Vaughtar was clearing snow at a very quick pace, but the gargoyle was not looking very well. XIII made his way over to Vaughter and caught the round of questions that Charles had for the gargoyle. 

"I could take over for you if you want," XIII said, his voice muffled by the balaclava he wore. He smirked and spoke with humor in his voice. "Hell, I think I could even beat you in how quickly I can remove the snow." He glanced at the circle the Vaughter had clearded from the alter outwards. "Besides, it looks like you've done more than enough to deserve a rest."