I live in a cold environment and sometimes put food/drinks outside as extra freezer space for fairly short periods of time. It can get to -30 degrees Fahrenheit. I am mildly curious if most food is preserved the same way as long as the temperature is below the freezing point, or if something else happens (like if it could last longer or if it would dry out quicker when it’s too cold).
In: 8
I think what OP is asking is if lower-than-freezer (“it can get to -30F [-35C]) temperatures will harm his food.
No damage will occur as long as you take care to package your food properly and if stored outdoors; kept away from direct sunlight. In fact your frozen items may have a longer shelf life than if kept in the freezer at 0F [-18C]
Edit: OP also asked about his food drying out more at lower temperatures; yes, since lower temp=lower humidity this is true. Be more worried about the sun beating down on your food, which would cause temperature swings above freezing.
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