How cold is too cold for drying

So i'm about to harvest in like 3 days or so, and my dumbass roommates have a habbit of trying to sneakily pick buds off the plant, so i know when i finally harvest and begin to dry the plant they won't be able to resist. So because of this i was planning on letting the buds dry in the closet in my room because i can lock that, but my room is kind of an annex (basically a screened in porch that someone insulated and put windows on) and i cant really afford a space heater so needless to say it gets down to like 50 or lower at night and about 60 during the day, so i was wondering if that is too cold for drying buds. Also i must mention that i live in colorado so the humidity is suuuper low. Thanks in advance for any advice

you should be fine, it will just take a little longer. Just keep an eye out for mold!

thanks for the quick reply kush... first time making it to harvest so i wanna make sure i dont f it up

You can't afford $30?

http://www.heater-home.com/product/FH-209.aspx?ref=nextag

I dried some shit out in my cold sellar before and they dried quik ass fck and was really good tasty bud orange hairs lime ass green I thought it was pretty good but the other thing is that it was a lil to dry lol shit was sum crunchy munchy but it worked I wrapped them in newspaper and let them go I think cool air can give a smoother taste