Garage doors not opening and closing properly in the winter months is a common problem that likely has nothing to do with your garage door keypad. It is important to remember that metal contracts in cold temperatures and expands in the heat. This means that in the winter months, the metal mechanisms are a little bit tighter. If your door starts to stick, lubricate all of the metal components to reduce the friction and make the garage door open more easily.
Alternatively, there could be a glitch with a safety mechanism. Many garage doors do not open or shut if something is in their path, and icicles or large mounds of snow could trigger or block their sensors.