Well seeing as it's winter basically 6-8 months of the year here, we're basically always set up for it.
Some of the horses don't have water during the day because the troughs freeze. But really they can eat snow if they're thirsty. Some of them have autos though, and the ones out 24/7 have autos and sheds for sure though.
The BO just put straw outside and the horses seem to enjoy standing by it for some odd reason haha. And they do also get fed more hay and blanketed up.
Otherwsie nothing really changes. They all go out during the day and come in during the night. I prefer my horse to be out for as long as possible because a stalled up 5 year old is not fun to ride, and he's a bunch happier outside. He's only inside in the winter so that I can ride basically all year round.