Systems, computer implemented methods, and computer readable medium having program products are provided to customize by a user weather-risk products and to provide a customized weather-risk product to be purchased by user. Embodiments of a system include a tract-user computer having a display to display graphical user interfaces to a user and an input to receive user selections, the tract-user computer being connected to a communications network to receive graphical user interfaces and transmit user selections to a weather-risk product issuer computer. Embodiments of a system can also include a database to associate user selections with actuarial data, location data, and basis weather data and a weather-risk product issuer computer to transmit graphical user interfaces to the tract-user computer, receive user selections, and process user selections to generate virtual weather data and to generate weather-risk products.