Down south there are hives that simply form under decks and tree branches, without any real shelter. Can these be removed in the winter time? Like when there's still snow on the ground?
I'll mimic what Steve said. Once a colony goes into winter mode you really don't want to mess with them, except perhaps to emergency feed.
Even where I live I have people waiting for the season to turn, which here is later this month/early March.
I have five removals I can think of right now that people have been patiently waiting for the bees to come out of winter.
One is an external colony in a shrub that I first looked at in January & advised the customer to add a windbreak, which they happily did.
That is what I always suggest on external colonies trying to survive winter, adding a windbreak & waiting it out.
...JP