Well, I’ve been out when it’s cold enough that if you spit on an upward angle it bounces and cracks when it hits.
We call it “painful cold”.
We were in Alberta hunting deer and they told us there was hoar frost. It was sparkling in the air, is that cold enough to freeze spit? If yes, then I guess it was cold enough to freeze a wet cat to the ground. Yikes. at least I was dressed warm enough not like the time I went out in my south Texas hunting clothes.