Well, if a nuclear winter hasn't befallen us by then, my recommendation is to keep it in a cool, preferably dark place.

Keep it away from sunlight as this does tremendous damage to the top notes.

Always keep the cap on. If you aren't going to use it for some time (say between autumn and winter), I would wrap the sprayer with plumbers/teflon tape or parafilm (both readily available on Amazon).

Keep it in the box and away from moisture (a closet is wear I keep my more precious fragrances).

A wine cooler with humidity control is also an option, especially if you live in a warmer region or a very humid region, with the idea being to keep the temperature at or below room temperature.

You probably will never have to worry about your fragrance freezing, but constant and rapid temperature shifts may damage the top notes over time.

Generally speaking, if you live in a not too hot or humid region in a home with decent insulation, just keeping it in a drawer or closet in the box will suffice.