Let me just convert that real quick...After you turn past 30, anything below 70 degree F becomes unbearable. It's 68 in my apartment right now and I have on a hoody, a flannel shirt, tights under my jeans, and have a desk heater flowing on me. Still cold.
... anything below 20?! Blooming heck mate, we only get a handful of days a year above that here. What temperature are you used to?