The importance of bringing extra clothing cannot be underestimated, and yet often people do not bring enough clothing to keep warm in changing conditions. It is easy to misjudge the conditions you will encounter if you only look at the weather at the time of your departure. Plan ahead: check weather conditions, including long-range forecasts, and carry extra clothing at all times. Hypothermia is a serious risk if you do not prepare to survive unexpected deterioration of the weather. Even in summer, temperatures can vary dramatically depending on the terrain and time of day. Pack rain, wind, and water protection as well as a toque when you travel in the woods.