The snow day predictor uses a variety of data sources to determine the likelihood of a snow day. This includes data from weather forecasts, historical snowfall information, and other data points such as temperature, wind speed, and precipitation.

The snow day predictor begins by analyzing the weather forecast for the next few days. It looks at the predicted temperatures and the forecasted amount of precipitation. If the temperature is expected to be below freezing and there is a chance of significant snowfall, the snow day predictor will increase the likelihood of a snow day.