Snow Day Calculator

Snow Day Calculator is an online forecasting tool that helps families estimate the likelihood of school closures and delays for the next day. Using a ZIP code, city, or school district, it combines National Weather Service forecasts with local climate normals to assess overnight snow, freezing rain, wind chill, weather alerts, and conditions around bus time. Estimates are tailored to regional winter norms, recognizing that the same snowfall can have very different effects in different places.

The calculator presents closure and delay chances in clear percentage bands and refreshes forecasts hourly overnight. Users can adjust settings for public or private K–12 schools, colleges, and districts with different closure tendencies, and report whether a school was closed, delayed, dismissed early, or remained open. The site also offers a five-day snow day predictor, cold day calculator, manual storm calculator, college predictions, two-hour delay estimates, district alerts, and guides explaining its methods, local snow thresholds, and decision timing.

It emphasizes that forecasts are estimates: each school district makes the final decision