when do schools have to close due to cold weather
Weather-related cancellation A snow day in the United States and Canada is a day that school classes are cancelled or delayed by snow, heavy ice, or extremely low temperatures. Similar measures occur in response to flooding, tornado watches, and severe weather (storms, hurricanes, dense fog, heavy snow, etc.). The criterion for a snow day is primarily the inability of school buses to operate safely on their routes and danger to children who walk to school. Often, the school remains officially open even though buses do not run and classes are canceled.