Can succulent planters stay outside all year?

Depends on where you live. What Zone are you in? Mine live outside year round but I am in Southern CA. See if these links help you out!

depends on your grow zone and how cold/deeply frozen the ground will get. You might get by with putting them in a garage or shed rather than bringing indoors ---

depends on Where you live....do you have frost and snow?

I have a hen and chick planter, that I don't bring inside. We get snow here and cold weather, although typically as bad as this year. I move my planter to a little sheltered area next to the chimney outside. I place a lot of leaves around it. It gets light, but not the sun it gets on my patio. It has made it that way for several years. The planter is wood with really good drainage, as it has slats. Clay pts will not work as they break with the ice in them. But you may not be able to just put them outside now. How about a garage, that gets some light? Basement that gets some light ?

I wintered them in a garage with no light or water for years.

I live in NH cold snowy winters. I have hen and chickens planted in my front yard near my foundation, they come back every year.