Passive Cellar OK?

[Triple H]

My guesses were way off. I installed a thermometer last fall, and the coldest it got this past winter was 39 degrees, which I think is fine, but this spring we've had some warm weather (low 80's) and I've peeked at 67 degrees (way warmer than I tought it would get) near the wine rack at about 6 feet off the floor. That's nearly a 30 degree swing, with daily swings around 12 or 13 degrees.<P>I think I'll do like Bucko and wall it off and insulate it.