Whoever wrote your climate history hardly seems competent. I suspect it was by a journalist, and not by either a scientist or an historian. A volcano in what is now Indonesia (then the Dutch East Indies) erupted explosively, ejecting the top 6,000 feet of the mountain into the upper atmosphere--Tamboro in 1815. The period 1812-17 was a particularly active one for volcanoes, but Tamboro was the worst. Most historians use the term "the year without summer" to describe 1816. Google "the year without summer," and you'll learn all about it. The omission of the cause for that effect on the part of your author makes me suspect he doesn't really have a clue.
Surely you don't mean six to ten feet . . . not yet, anyway.
It has turned into freezing rain here.
I was out before six a.m.
Do you get out there to shovel it, Boss? I was out before six a.m.
One wouldn't expect snow to be warm.