I live in Wisconsin which typically isn't much colder than the NE. About 9 years ago, I was up in the U.P. of Michigan and with the cold wind coming off lake Superior the wind chill was -60. It was really cold and there were only 20 people out on the hill which made for great carving. Now I typically don't drink and carve, however on that day I was going in after ever 3-5 runs for a hot tottie. As others have mentioned the key is layering, but not too much that you sweat. Also, no exposed skin...lubing up with vaseline in the spots where the mask, goggles and helmet don't cover is a helpful hint I learned in cross-country where we've been known to run in shorts and a tank top in 5* for nationals...brrr!