Selling season generally starts when trapping season ends. In January, a lot of northern trapping seasons are winding down and the bulk of the fur has been harvested. Yes, some trappers persist up in northern areas, fighting snow, ice and cold temperatures. And yes, the fur harvested then is top quality. But quantity-wise, January and February are not the top months for quantity.
Many trappers call it quits around Christmas, and I know several guys who use their Christmas holidays to sort and put away their gear, and put up their catch (thaw, flesh and dry frozen skins).