I've been leaving my bike outside due to the massive amount of snow and slush build-up on it. Today it got very warm then flash froze to -30c (with wind chill) and for the life of me I couldn't shift my rear deraileur when I took it out for a ride. Taking this into account with some other adjustments I wanted to make, I brought the bike inside to thaw. The shifter is fine now, so the cables must have taken the melted snow and froze that way. (that's my guess)
Is there any way to protect the cabling from flash freezes?