One Night of Freezing Temps...

Well, 'wind chill' is a term that describes the effect on our comfort level. A strong wind WILL cause things to cool down faster and pipes to freeze faster for the same reason it makes us feel colder. We generate internal heat (as your camper sort of does) and in still air, the boundary between your skin and the outside world will stratify and there will be a tiny zone next to your skin with warmer air that keeps you from feeling as cold. As the wind starts to blow, that stratification goes away and the air next to your skin is continually replaced by colder air that will absorb heat from your skin faster ( the drier it is, the quicker it will do that as it will evaporate moisture from your skin, too). Human activity inside your rig (and the furnace) generate heat that is constantly being lost to the outside through the poor insulation and windows. Wind will remove that "travelling heat" faster and make freezing pipes more likely to happen faster. A travel trailer WITHOUT an "Arctic package" could easily freeze up. We had one that had the plumbing underneath a thin plastic shield that afforded little insulation value unlike better rigs with all the piping placed in "conditioned space". Wasn't suitable for cold weather use. Got plenty of practice winterizing. Be careful...you don't want to have to be replacing your piping!