My bedroom has no heat. Without a space heater, it usually gets down to 58 degrees or so after a couple hours.
I'm also nearly cold resistant. I made a little chart for things I can handle on a scale.
Shorts:
70+ degrees
Jeans:
Any temperature (one time I wore nothing but jeans for 18+ months)
Short sleeve shirt only:
35+ degrees
Long sleeve shirt only:
N/A, don't wear them
Unlined sweater:
15 - 45 degrees
Lined sweater:
-20 - 30 degrees
Winter coat:
N/A, don't wear them.