Wet feet lead to blisters and, again, possible hypothermia.
Waterproof shoes and outerwear are also important. If your shoes get wet, your socks are likely to follow. Wet feet lead to blisters and, again, possible hypothermia. Your outer layer, which will be a waterproof and windproof mountaineering jacket when you’re fully outfitted, will be your last line of defense from the elements.