It's been fairly chilly here the past few days (-10ish), and there's a bit of snow on the ground (maybe 5 cm or so at the moment). But they keep saying it's supposed to get warmer, and go up to -1 or 0 over the next few days. You probably don't need winter boots, since we can drive or take the subway most places we'll want to go. I've just been wearing my Docs all winter :)