Climate change impacts, which are often modeled as "end-of-century", are currently resulting in climate-induced stress to species within their historical range, affecting their ability to both survive and reproduce effectively. However, given diverse threats such as invasive plants and animals, disease, and habitat loss, it can be difficult to discern whether population declines are due to climate change or other threats. We will present the most recent data on declines in Hawaiian forest birds, plants, arthropods, seabirds, and snails that have raised alarms across taxonomic groups regarding the role of climate change and how to manage for changing conditions alongside other threats. The severity and cross-taxon nature of the recent declines call attention to the likely impacts of climate change on plants, animals, and ecosystems long before the end of the century, and suggest the potential importance of translocations outside the historical range for the persistence of climate-sensitive species. Given the multiple threats across taxonomic groups, timely, coordinated and collaborative actions across the Pacific are critical to prevent extinction and achieve recovery.