Musical instruments can hold sentimental and monetary value and should be stored the right way. There are many reasons you may wish to store an instrument, whether it’s to pass on to a child or you may be in a band. Temperature and humidity really matter when it comes to storing an instrument. Fluctuations in relative humidity can crack and warp wooden parts of an instrument and cause the instrument to expand and contract, resulting in more damage, thus depreciating its value. All instruments from trombones to drums are sensitive to extreme hot and cold temperatures, humidity and dust.
Optimal storage temperatures for musical instruments would be consistently in the 70°F range with 40 -50% RH.