The weather can also wreak havoc on your garage door. Ice and snow builds up beneath the garage door, freezing it shut. Metal components contract and seize up in extreme temperatures. Old lubricating grease hardens when temperatures drop, gumming up the tracks. While some issues cause minor inconveniences, others can lead to expensive damage to your garage door or garage opener.
http://www.nuvogarage.com/garage-door/protect-your-garage-door-during-winter-weather/