The climate I live in ..it's a bit extrem compair to yours.

Mild winter...70 - 80.
Or I just get spring and summer,summer.
The huminity here can be extreem during the summer months too.

Even if you keep it in your house..the climate changes in your home will effect it.
Not as drastic but it'll still effect it.

I play guitar.. i store those indoors and try to protect them as much as i can.
However...i still have to adjust the truss rod on the necks every so often becuase the neck
gets wrap due to changes in climate conditions in the house.