We get pretty cold here too. The bees can do cold but what they can't do is wet. You need to make sure that the hive is situated so no water can seep in or build up in it. The hive I got (for free) had 4" of dead moldy bees in the bottom of it because it wasn't sitting level and when the snow melted it ran into the hive. I thought the colony was all going to die but I cleaned out the mess and the colony started to thrive. They made a TON of honey the first year even after having to start from scratch making the comb on new frames.
I got rid of the bees once my son was crawling. I have tons of clover in my lawn and after I got stung on the bottom of my foot from stepping on a bee I figured I'd better do something before my son got stung. I am also allergic to bees so my foot got so big id didn't fit in my shoe. All that aside, now that my son is older, I would love to get bees again. They don't take much time in the winter or summer but in the spring and fall they can be time consuming. Good luck with your new colony! What kind of bees are you getting?