So far this winter has been perfect for a Minnesota winter. There have been a few days that have been cold but nothing out of the ordinary. The plus that I have noticed that so far we have not experienced any sub zero windy days. It is this type of weather that kills colonies. The wind cools the hive down and is unrelenting until it finally moves out ot the area. Straight cold weather is not difficult for the bees to survive.
This week the weather is moving into the thirties for a January thaw. The bees will be flying and taking cleansing flight taking advantage of the warmth. The warmer temperatures will help bees reposition in the hive. Hopefully the bees will get on some full frames of honey to prepare for colder weather that always seems to hit around the third week of January.
This is a youtube link slide show from Jerry Linser that is appropriate this time of year.