The optimum storage temperature for most apple varieties is 30 to 32 degrees with a 90% relative humidity. Apples ripen twice as fast at 40 degrees as at 32 degrees.
Apples can be stored outdoors in insulated containers as long as the outside temperatures are above 10 degrees. They will last longer and retain more flavor if kept in a fruit cellar. Wrap the fruit in individual wrappers to achieve better results. It is important to maintain the correct humidity when storing apples.