Hunting in cold weather affects the feeling I get in my toes and fingers, (even with hot packs), and also affects my enjoyment in the hobby.
That being said, last winter I went out a few times and hovered over 10" snow levels using the all metal threshold on my Vaq hoping to pick up some sort of signal and then dug down through the snow when I did just to dig something because cabin fever was really starting to get to me.
Not really worth it, no hoped for gold or silver jewelry but I did find some coins and that helped a bit.
Not much but a little.