Help, just chopped - drying question

I got caught up with some stuff, had to chop n dry asap. Is 30Degrees way too cold to dry in during the night? I know around 75-85 (maybe cooler) is better, but damn. I don't have much of a choice unless I use a cardboard box and put it somewhere...the attic has plenty of space and fresh air. I covered the nearest light hole, but there's one probably 15 feet away from the screen of bud. Other than that, there's no light...what do yall think?

Whats the coldest temp allowable x_X and how much could this effect the potency (this is gonna be better than an oven right x.x?). They're less than 24 hours fresh.

PS. Drama SUCKS!

I moved them somewhere warmer, but...wat kind of effect do u think this might of had, 7 hours of cold temps? AHH

hehe no worries keep them in low light low humidity semi warm temp. even 60 will do if its not too moist.