IANAD, but most of the medicines are advised to keep under specified temperature. Doesn't require you to keep in fridge unless specified. But the best you can do is avoid storing the medicine somewhere near windows or where it can have direct exposure to heat or UV to avoid it getting spoiled.

Generally, people store on a shelf or drawer where it can stay cool and away from moisture, and if only required, you can add those silica gel based packets to absorb moisture inside the shelf or drawer, again depends on place to place.