The beer will be fine if you leave it at room temperature in your home. In other words, not in a hot garage, or out on the deck in the hot sun, unless it's winter (and not freezing out). That type of extreme heat — think 80-plus degrees — will, in fact, ruin the beer.
Beer is best preserved when kept cold… Keeping beer at room temperature can drop a beer's shelf life from nearly six months to only a few weeks, and exposing the same beer to very warm temperatures can affect its flavor in a matter of a couple of days. The good news? It can never make you sick.
four to six months