Mark Manicone mmanicone@thelancasternews.com The Piedmont area and much of the state will by impacted bone-chilling cold this week. Temperatures will struggle to break the freezing mark, especially in the mountain areas, with lows in the mid-to- upper teens and wind chill values in the single digits, according to the National Weather Service. Lancaster County Schools are operating on a two-hour delay today for students because of the bitter cold.