Q.Composting in Zone 6
Since we live in a cold weather area, what is the best way to compost – in a bin or in an open area? What is the best way to do it?
Certified GKH Gardening Expert
Either a bin or an open pile are possible, though a bin will probably be more convenient in winter. When winter comes, either use up the compost in an open pile and start again, or cover an open pile with a tarp to prevent nutrients from leaching out.
https://www.gardeningknowhow.com/composting/basics/winter-composting.htm
This article has a section about compost in winter toward the bottom:
https://web.extension.illinois.edu/homecompost/building.cfm