Some of the coldest, most miserable cold season camping I ever did was in FL, not Michigan. Was in a tent in a crappy park in Stuart mid-January 1985 when a massive record setting cold front moved through. 19° in West Palm Beach. This same system brought -24° to Ohio and Indiana. I saw icicles hanging from the beach access stairways in Jensen Beach. FL cold is damp cold, worst type of cold. I wear synthetic sleep wear in winter, since cottons just absorb the ambient air and it’s like sleeping in damp clothes.
When that season’s cold front hurt the orange crop, they said the damage would just worsen, since “groves were planted in the 30’s and 40’s when the temperatures were warmer, and the coming cooling trend” would kill warm weather crops. Ha.