Quinzees Snow Cave

Will a Snow Cave Keep You Alive?
First, let's define the difference between a snow cave and a Quinzee. A Quinzee is made by shaping snow into a dome-like structure and then hollowing out sleeping quarters inside. The word Quinzee comes from the indigenous peoples of Alaska and Northern Canada.
A snow cave, on the other hand, is typically a hole dug into a large snowdrift or into deep snow. The snow is displaced from its location, in other words. To construct, you simply dig into deep snow to create a sleeping chamber. There are advantages and disadvantages however to either one. The snow cover and geographic location may determine which one you construct.
If there is not snow deep enough to dig into so you can create space, you would gather the snow up and construct a Quinzee. Whereas, if the
Snow is nothing more than frozen ice crystals that can sustain their shape on the ground if the air temperature is below freezing. Snow is also full of air pockets, which will benefit you because air pockets do act as an insulator.
Back to the question, will snow keep you alive? If the air temperature is, for example, -15° F then you would have a very difficult time surviving unprotected, but what if you could increase the air temperature to let's say 32° F. You would have a much easier time surviving right, of course, you would.
A snow cave or Quinzee if done correctly can maintain an inside temperature of 32° F or even warmer, and this even if the air temperature outside is minus 30° F. Your world just became much warmer, but you can easily succumb to hypothermia at this temperature without the proper protection.
It is assumed you would have cold weather clothing, sleeping materials, and a ground cloth or ground insulators to raise you off or to protect you from the cold ground. You would also need a way to block cold air from entering the