Oh, noticed that you're actually going to boston. Yeah, pack warm. Although they are warmer than normal right now, they aren't as warm as we are in philly. Plus, omg, WET COLD. Really bad. The one time I went up for thanksgiving to spend w/ some friends, I ended up buying this huge leather coat because I WAS FREEZING. I imagine that wet 45 will be enough of an assault on your warm weather sensibilities to feel pretty bad as well.