Abstract: An example computing device may generate a plurality of snowfall categories for a region and a plurality of snowfall category combinations at the region for a time frame that includes a plurality of time segments. The device may calculate a forecast of unit sales of a weather-dependent product over the time frame for each snowfall category combination based on past weather data for the region and past sales data of the weather-dependent product. The device may calculate a probability that each snowfall category combination will occur in the time frame. The device may determine a quantity of the weather-dependent product to place in inventory prior to or at the beginning of the time frame configured to approximate demand for the product over the entire time frame based on forecasted unit sales and the probabilities that each snowfall category combination will occur in the time frame.