cold weather camping

I’ve done it many times in sub zero weather. Mostly winter hunting and scouting trips in the mountains. That was typically in my wall tent or PU, I rarely used my TT, it just wasn’t suitable for getting well back off the pavement in the weather conditions. Winter camping trips I usually stay in the lower elevations of AZ which can be below freezing but not sub zero. Most of my camping, though, is at high elevations in the spring to fall.