Oh, the famous "January Thaw". Usually happened around the 10th of the month melting all of the winter snow so far. When I was quite involved with BSA, we too often had our Council winter training outing scheduled around that weekend, Gawasa/Ookpik. Gawasa, the Iroquois snow snake, an ornately carved stick that was raced down hill on an iced track, and Ookpik, the white snowy owl watching over the games. It was commonly understood that to be counted as a winter camp outing, the temperature had to be below 50F. Often the January thaw would melt everything and remain above 50 degrees for the entire weekend. Formally not really a winter event. But they had fun anyway learning and building natural material stick debris and tarp shelters.
But in those years when there was no thaw and we had our more normal lake effect cold snow dump when the boys got trained indoors and given or self made warm winter gear before going out to make their snow shelters, Quinzees, trench shelters or other kinds of natural material shelters.
I always made my quinzee snow mound when I could with enough available snow. The problem was, you have to begin early in the afternoon, pile up an 8' high mound of loose snow, wait an hour or two for it to sinter and become firm enough before digging out the interior into a living space sleeping platform. By that time you are wet, not just from laying in the snow while digging inside, but also from sweat of the hard work. I always wore a rainsuit over minimal winter clothing to do the job. But once done it is more than comfortable inside. One memorable year the temperature overnight dipped to -30F. The kids in tarp covered trenches had early on moved into the nearby dining hall to sleep next to the wood stove. But with the heat of myself in my sleeping bag and two small candles burning in my snow shelter, the temperature inside was an almost too warm +25 all night.
It was Sunday morning, and after breakfast only one or two cars had enough battery juice to start, which had to be used to jump start everyone else to go home.