[jumpinjeff]

Very true @Bill_Brown regarding warmer air. It is why we are concerned with relative humidity and why we acclimate for temperature slowly so as to not create condensation. Temperature extreme will not hurt guitars but rapid temperature changes can create moisture where we don’t want it. A guitar coming in from a cold (40degree+) temperature could accumulate moisture when rapidly introduced to the warm environment. This works in reverse too. Taking a warm guitar into a cold space will force the trapped air to shed water as it cools. Humidipaks are a fantastic remedy for helping even out the cycle.