Matewis: 2 degrees celcius: too cold for me. Granted perhaps that's because I don't want to wear more than a t-shirt and a light jacket :\
dtgreene: At lest it wasn't 2 degrees *fahrenheit* (= about -16 or -17 celsius). Better get on your winter jacket, fleece leggings (you *do* have them, right?), scarf, and other warm clothes if you plan on going outside!
(And yes, I have seen weather this cold; in fact, there was one day this year it was even colder. (I didn't go outside that day.))
I do have a nifty scarf :) The problem is that it gets pretty mild mid day, even in the dead of winter, so wearing cooler clothes is an investment in mid day comfort. At least, warmer clothing items that can be trivially removed such as a scarf or jacket. That is, no additional sweaters, extra leggings or anything like that. I'm very lazy and stubborn that way :P