Pueblo sits in a cold climate band with winters hard enough to matter for steel hardware, and that's the piece that drives most of what we see on service calls. A torsion spring is a coiled piece of tempered steel, and steel fatigues faster through repeated hard temperature swings than it does in a mild climate. Springs rated for a certain number of cycles under normal conditions tend to give out sooner here, especially on doors that are already decades old.
Add the age of the housing stock on top of that. A large share of homes across the service area were built in the 1960s and 70s, which means the garage door hardware on a lot of these houses is either original or a like-for-like replacement from years back - side-mounted torsion springs, steel rollers without nylon bushings, openers from an earlier generation of chain-drive units. None of that hardware was built with today's mounting standards or safety sensors, so when one part fails, it's often not alone.
Cold snaps are also when we see galvanized spring coating crack and torsion bars bind up stiff, because the metal contracts and the old grease in the bearing plates thickens. It's a mechanical problem with a seasonal trigger, not a mystery.