i generally keep my place fairly cold, especially in the winter. the thermostat currently says 60, but i'm skeptical.
when i take a shower i leave the door open a bit and i turn on the fan to pull out the steam. occasionally, when it's really cold, the mirror will only fog up on the very top edge or not at all. and then when i turn off the water and open the shower curtain, a cloud rolls across the ceiling and the fog crawls down the mirror.