Mayhap there is a reason for the lack of guidance... If this sudden onset of snow was indeed an unscheduled interruption, it may serve as explanation of such.

[He glances back towards the door. It didn't seem as though any staff were in a rush to get the situation under control, but he isn't exactly keen to rush back into the chill to investigate it, either. It's only some hypothetical musing for now, at any rate, and tending to their well-being takes precedence. Paying it no further mind, he starts to lead them down the hallway, bits of half-melted ice dripping from his clothing with each step.]

It would be nice to encounter some personnel amid our excursion. A change of clothes seems rather in order first and foremost.