The U.S. Department of Defense has characterized the current approach to corrosion maintenance, which is based on simply finding and fixing damage before it becomes a concern, as inadequate to maintain mission-critical equipment and facilities to support stationing decisions. There is a need to go beyond corrosion prediction and management approaches to consider the impact of climate change on stationing decisions. To address this concern, there is a need to develop defensible, accurate approaches to project how certain installation metrics involving materials degradation are likely to change in the near future. The first step in creating a tool to meet this need is to determine how selected quantitative data, or chosen installation metrics, will change over some specified period. This work developed and tested a corrosivity model capable of predicting corrosivity at specific sites.