Whether your urban outdoor furniture can stay outside all winter depends on several key factors. The primary consideration is the material. Powder-coated aluminum, stainless steel, teak, and high-quality synthetic resins like poly lumber are generally winter-hardy and can withstand freezing temperatures, moisture, and snow without significant damage. However, furniture made of wrought iron (unless impeccably sealed), standard steel, or certain plastics may rust, crack, or become brittle.
Proper protection is crucial. Using high-quality, breathable waterproof covers can shield furniture from direct snow, ice, and UV degradation. Elevating pieces off wet ground prevents water absorption and freezing damage. For cushions, bringing them indoors is almost always necessary, as they can trap moisture leading to mold and mildew.
Ultimately, the decision involves weighing convenience against preservation. While durable materials may survive, bringing furniture inside a garage or shed is the safest choice for extending its lifespan and maintaining its appearance. For permanent installations, investing in specifically rated all-weather furniture and implementing a consistent off-season maintenance routine is essential.