I've never really had a problem staying warm winter camping - even around zero degrees. The key is a warm mummy sleeping bag and a small tent. The air in the te

I've never really had a problem staying warm winter camping - even around zero degrees. The key is a warm mummy sleeping bag and a small tent. The air in the tent is basically insulation, and in a small tent your body heat keeps it pretty warm. Use the mummy bag properly and you might even get too hot and need to unzip it a little.