It's certain, on the East Coast, anyway. I got an email from Stowe (I think) the other day saying that hornets were building their nests high on the lifts this year (unlike last year), and that this was an incontrovertible indicator of a snowy winter.
Better than that, I saw my first wooly bear of the season: narrow. stripe.
AND dead, WITH its head facing north.
I mean . . .