Although some outdoor patio dining sets are weather-resistant, they're not 100 percent weatherproof. When selecting outdoor furniture, consider the weather in your area. You might consider investing in sturdy materials, such as wrought iron, hardwood, or aluminum. Wrought iron is wind resistant and durable. Hardwood is known for its long-lasting potential, ability to withstand the elements, and resistance to insects and other decay. Aluminum resists rust and moisture, making it a good choice if you live somewhere that gets a lot of rain.