Rule of thumb: a garage door in St. Petersburg doesn't freeze to the ground, but it can act like it has. We don't get hard freezes often, but when a cold front pushes through and the morning air is damp and in the 30s or 40s, moisture on the slab can tack a rubber bottom seal down just enough to make the door feel stuck. The exceptions are the doors already working against something else: a wood or composite door that soaked up humidity all summer and is now shrinking and binding in the track, a coastal unit with rust creeping into the rollers from salt air, or an opener whose logic board doesn't like the temperature swing. On its own, a quick cold snap rarely causes real trouble. Combined with one of those, it will.