Whatever is ambient temp minus wind chill + contributing wood stove. 60x30 1815 era Post & Beam barn with a concrete floor is my shop. Great until it’s not then I just do other things.
Single digits at the moment. Wish it’d got colder quicker. Was gonna let the deer hang a couple days longer. But I ain’t gonna bitch about our fall. It was really nice.
I use the old barns for most shop work out of the weather, they be cold this time of year. The garage here has most of my tools and a workbench for repairs. I open the door to the basement and allow the heat from woodstove to take the chill off. I get by just fine that way!
House is lower 60's. I keep my 4800+sf shop at around 60* in the winter with LP. Wood furnace gets fired up most days in the winter. It's also air conditioned so rarely over 70* in the summer. I spend 12-16 hours a day in my shop so it's nice to be comfortable.