The short answer is: it depends entirely on the furniture's materials and construction. High-quality modern urban outdoor furniture is specifically engineered for all-weather endurance, including harsh winters. Key materials like powder-coated aluminum, teak, stainless steel, and synthetic wickers (HDPE) are inherently resistant to moisture, rust, and UV damage. These materials won't crack in freezing temperatures or degrade under snow and ice.
However, "all-weather" does not always mean "maintenance-free" for year-round exposure. While the structure may survive, prolonged winter exposure can accelerate wear. Moisture can collect in crevices, and repeated freeze-thaw cycles, while not causing structural failure, can slightly diminish the aesthetic finish over many seasons. For longevity, best practice involves protective measures: using high-quality fitted covers, storing cushions indoors, and ensuring furniture is clean and dry before major snowfalls. Elevating pieces slightly off wet surfaces also helps.
Ultimately, investing in furniture from reputable brands that specify "all-weather" or "year-round" use is crucial. Check product specifications for temperature tolerance ratings. With the right selection and minimal care, your modern urban outdoor setup can indeed be a permanent, stylish fixture in your landscape, braving the elements through all four seasons.