Whether outdoor furniture can be left in snow depends primarily on its construction materials. Most manufacturers do not recommend prolonged snow exposure, even for "all-weather" pieces. Snow accumulation adds weight that can stress frames, while melt-freeze cycles accelerate wear on fabrics, finishes, and mechanisms.
High-quality aluminum, teak, and certain synthetic resins like polywood generally have the best snow resistance. However, cushions should always be stored indoors. Wrought iron may rust at weld points, while steel frames are particularly vulnerable. For any furniture, using a breathable, waterproof cover is strongly advised to prevent moisture damage, mildew, and UV degradation during winter months. Proper winter storage in a dry shed or garage remains the optimal choice for preserving your furniture's lifespan and appearance.