Hi @Dani ,
It was some discussion about keeping bees in extreme climates.
You have a couple of options, depending on how many hives you planning to keep and what you already have at the moment. If it is couple of hives and you have some structure where temperature does not drop too much and not higher than 3-4°C in winter time, you can keep them there.
For larger operation omshanik could be an answer. Underground version probably the best and cheapest option if soil is stable and ground water table is deep enough.