While it's possible to leave a vinyl tablecloth outside, it's not typically recommended for long periods of time. Vinyl tablecloths are made from a plastic material that can withstand some outdoor elements like water and dirt. However, prolonged exposure to sunlight, rain, and fluctuating temperatures can cause the vinyl to fade, crack, or warp over time. Additionally, strong winds could potentially blow the tablecloth away if it isn't secured properly. Therefore, it's best to bring your vinyl tablecloth inside when it's not in use to extend its lifespan and maintain its appearance.