Very cold temperatures are going to be with us through most of the week. Currently a cold weather advisory is in effect for a portion of central Pennsylvania until 10 this morning. The dangerously low wind chills, which could hit 15-20 below, can result in hypothermia or frostbite if precautions aren’t taken. If outdoors, dress in layers, and cover exposed skin. After today, the rest of the week is expected to see below-normal temperatures for this time of year.