It's nice seeing no meaningful snow in the forecast for the foreseeable future. The heart of winter is over in a couple months, let's keep spinning wheels and we're there!
The most snow I saw was in Weare, NH at about 700'-1000'. Ground was covered ( a few blades of grass withstanding),and there was some slush on the roads, probably around 2". unlike areas like CON/MHT and even north into Loudon/Contacook.
There are a few sites, but wxunderground has some data. Wish I could remember more "easy" sites besides the rabbit holes you speak of. I assume you are talking about compiling the numbers.
https://www.wunderground.com/history/daily/us/ma/east-boston/KBOS