In 2016 Henry Worsley attempted to become the first solo explorer to cross Antarctica. He battled temperatures reaching 44 degrees below zero. He came close to accomplishing his goal but, met his demise just miles before the finish line. The cause of his death was not starvation or hypothermia as you may be thinking; it was dehydration.
You do not have to be an extreme explorer like Mr. Worsley to suffer from cold weather dehydration. Soaring summer temperatures grant us a constant reminder to drink water. Our chilly winter days are absent these life-saving cues. As temperatures drop our instinct to drink diminishes leaving us susceptible to dehydration. Not to mention that the idea of a cold gulp pf anything is far from appealing when we are already freezing. Our inclination is to turn to warm drinks such as coffee or tea which can further dehydrate our systems.