A computer-implemented method and system evaluates and displays a return on investment for using weather-related risk-management services. The system includes user interfaces, databases containing information about the accuracy of different forms of weather-related risk-management services and the types and frequency of weather events in different geographical areas, and return on investment functions. The system accepts information about a user's costs of responding to weather warnings and events, retrieves information from its databases and applies the appropriate function to determine a return on investment. The result is then displayed to the user. The method determines the costs of weather-related risks faced by a user under two different risk-management services and compares them, determining a return on investment for the use of one service over the other.