Aluminum sheets are generally suitable for use in cold climates. They have excellent resistance to corrosion and maintain their structural integrity in low temperatures. However, aluminum is a good conductor of heat, so it can be prone to heat loss if not properly insulated. For outdoor applications in cold climates, it's important to ensure that aluminum structures are well-insulated to prevent heat transfer. Additionally, aluminum's malleability can make it susceptible to denting or damage from ice and snow, so protective measures may be necessary.