If it's going to be cold out, your local winter gear is like someone from Florida's winter gear going to Nebraska.
I've got a pair of insulated pack boots that are rated for 120°F below, and if I'm not moving around my feet still get cold in the nasty weather.
If it's bad, you could see -30°F or worse on the thermometer. Disposable chemical heating packs are your best friend! I like the larger ones, that are supposed to run for 18 hrs. (about 6" square).
