What Dangers Did The Climate Represent To The Man?

The weather is below -70 degrees. The man knows that nobody should be travelling alone or really travelling at all in such cold. He sees this when his spittle freezes before it hits the ground. The dangers the man faces is frostbite, especially if he gets wet. He only has a limited amount of time to get to Henderson's Creek before the cold of night kills him. There are dangers all along his trail. Thin snow from the hot springs hide puddles along the way that can get his foot wet. The man does fall in and mere minutes to make a fire before losing his foot. The man's fingers and hands cease to work when it is too cold.