If it has any kind of LED screen (the touch kind), then do NOT store it where the weather freezes. We left a clock in our camp trailer, with temps below freezing, and the stuff in it froze...we had to toss the clock. Oh, i live where we get 20 below at night. I have mind in a shop off the garage. I bought a radiator type heater where there is oil in it that circulates around.....the heating in that shop costs me very little to run during the winter. The shop is insulated really well and is small.