The National Network for Ocean and Climate Change Interpretation (NNOCCI) is working with The Marine Mammal Center, Knology, and the Frameworks Institute to build national capacity for evidence-based climate communication through innovative training programs and a community of practice that engages educators, scientists, community activists, and communities of color. Nearly two-thirds of Americans talk about climate change only occasionally or not at all, resulting in a lack of action to address one of the most critical issues of our time. The National Network for Ocean and Climate Change Interpretation has worked for more than a decade to advance the science and practice of effective public communication around climate change by developing, evaluating, and deploying communications tools that employ both cutting-edge climate science and communication research to increase both knowledge of climate change and a willingness to engage in climate action. The network’s community of practice offers resources, events, and activities to support members’ social, emotional, and intellectual growth, sustaining their long-term commitment to activate the public around climate action. Despite many successes and impact shown through previous programs, gaps still exist in the availability of these messages to communities across the country, and an intentional focus on justice, equity, diversity, and inclusion is critical to ensure that communications and proposed solutions are accessible and appropriate for marginalized communities. New lessons connecting justice, equity, diversity and inclusion will be developed and tested by a justice and equity team, as well as outside experts. These new lessons will be included in all training programs, including an existing online course focused on building awareness for climate communicators, and a new virtual and in-person training course for climate communication trainers in the Southeastern United States. Through these training programs, a new training platform, and the support of a new project coordinator, the network will welcome new climate trainers and communicators, while building a stronger community of practice nationwide.