That's an excellent question that many homeowners in colder climates consider. When temperatures drop significantly, it's natural to wonder about the durability of outdoor items, including trash bins.
Modern outdoor trash bins are specifically engineered to handle temperature extremes, including freezing conditions. While standard plastics can indeed become brittle in cold weather, quality outdoor bins are manufactured from high-density polyethylene (HDPE) or polypropylene materials that contain special additives to maintain flexibility even in sub-zero temperatures.
These materials undergo rigorous testing to ensure they won't crack or become fragile when exposed to winter conditions. Manufacturers typically design them to withstand temperatures as low as -20°F to -40°F without compromising structural integrity. The plastic composition includes UV stabilizers and impact modifiers that work together to prevent brittleness.
That said, there are some practical considerations. During extreme cold snaps, the lid might become stiffer to open, and if struck with significant force (like being hit by a plow), any bin could potentially crack. For optimal performance, I'd recommend positioning your bin in a somewhat sheltered location during the coldest months and avoiding moving it unnecessarily when temperatures are at their lowest.
The bottom line: quality outdoor trash bins are specifically designed to handle cold weather conditions without becoming brittle, but reasonable care during extreme temperature drops will help ensure their longevity.