Vintage Synth Repair

I have my equipment in a storage place that does not have climate 
control. I have keyboards, roland guitar synths, effect pedals, guitar 
procssors. tascam recorders. all mostly chips. I know the cold does 
not harm them, but to make sure, does anyone how what degrees in the 
cold weather it gets before it ruins your equipment..I was looking to 
move around and I put it in aplace before the cold weather came in, if 
anyone knows about this get back to me. have a happy newyear to all. 
Gerry