Winters here sit in a cold-severe climate band, and that matters more for doors built around 1973 than for newer ones, because the steel springs and bearings from that period weren't built with the corrosion coatings common today. Cold tightens steel and thickens the grease in an old opener gearbox, so the first hard freeze of the season is reliably when we get calls about doors that groan, stall halfway, or won't respond to the opener at all.
Add to that: springs are rated in cycles, not years, and a spring installed when a Spry house was built in the early 1970s has had five decades to wear out one way or another, cold snap or not. Combine age with repeated freeze-thaw stress and a weekend breakdown stops being a surprise and starts being arithmetic.