NASA is leading a large-scale effort to conduct research, develop standards, and integrate technologies to facilitate the insertion of Unmanned Aircraft Systems (UAS) into the National Airspace System (NAS). One area of development to support this effort is the adaptation of existing weather technologies for manned cockpits for use in UAS ground control stations (GCSs). However, the lack of a defined concept of operations (ConOps) and specific GCS technologies for UAS integration in the NAS present challenges for proposed weather information systems. Aptima proposes to develop WINDSUN (Weather Information Display System for UAS in the NAS) as a flexible system architecture and innovative library of platform-agnostic interaction methods to support integration with various ConOps and GCS technologies. A successful Phase I effort will include: (1) a use case with a ConOps to define the core set of tasks around which the design is built; (2) an innovative system architecture that is adaptable to multiple workflows; (3) user interface designs for interaction and visualization; (4) a demonstrable proof of concept physical prototype; and (5) transition plans (implementation, evaluation, and commercialization) for WINDSUN. Phase II efforts, including (1) GCS integration, (2) experimental evaluation, and (3) transition to operational environments.