(Undated) -- Several public school districts across the state are either closed or delaying opening this morning because of the cold weather. Wind chills across the state are expected to be 15-to-25 degrees below zero this morning, according to the National Weather Service. As of overnight, the public schools on a one-hour delay are Burrillville, Cumberland, Johnston, Lincoln, Smithfield, and the Northern Rhode Island Collaborative, while Woonsocket schools are on a two-hour delay. There is no school for Foster-Glocester, North Smithfield, or Newport, which is being affected by the National Grid gas outage.