Bottom fell out yesterday afternoon; Went from 35 then, down to -5 this AM. Luckily, we got less than the 6-8" of snow that was originally forecast. I loaded in the wee hours on a pretty big coal bed, so not a lot of wood. I just got another load cruising now, nine hours later after burning down coals for a couple hours and getting the stove top back up to 340. With that long a time, and limited net heat off the stove, room temp has dropped from 67 to 63. It'll be interesting to see if I can recover room temp at the current level of weatherization, with the stove chock-full o' Pignut Hickory and a probable high of 2 degrees with 15-20 mph winds. She's just crested 500 and should level off around 530 or so, I think.
Like many other posters, I haven't yet tested this stove, with this dry of wood, under conditions this severe. This is fun
....until I have to go outside for more wood!
One more below-zero night is forecast. I think I'll load up on some BL tonight and try to get a more timely reload in the AM to keep the heat flowing better than I did this morning. 67 ain't too bad....63, and the pooches look at me, then at the stove, then back at me.
I lived in southern WI for thirty years, but that is a couple climate zones warmer than up there!