snowday Calculator

Snow Day Calculator is an online forecasting tool that helps families estimate the likelihood of school closures due to winter weather. Serving users in the United States, Canada, and worldwide, it uses real-time weather information alongside historical closure patterns and local school behavior to generate an estimated snow day probability. Users can enter a city or ZIP code to check conditions for tomorrow or the next three days.

The calculator considers forecast snowfall, storm timing, temperature, freezing rain and ice risk, wind, and wind chill. Its results can also help users assess whether a school delay or closure may be possible, supporting planning for childcare, work schedules, morning travel, and student routines. The site offers a U.S. snow day calculator and a separate predictor for Canadian locations, including Ontario. It also provides information about its forecasting methodology, how to interpret probability and confidence, and common weather factors that influence school closures.