Here’s another rephrased version with smooth wording and a clear, engaging tone: Snow day calculator apps have become an important tool for families, helping them estimate the likelihood of school closures. This article discusses what a snow day is, the reasons schools choose to close, and how those decisions are made. A snow day is called when severe winter weather creates unsafe conditions for students and staff. Heavy snow, icy or unsafe roads, extreme cold, and blizzard conditions are common factors behind closures. When a snow day is announced, classes are suspended so students can stay home safely instead of traveling in hazardous weather.