This dataset contains summarized climate projection and historical climate statistics for selected extreme event and threshold‑based climate variables across the Southeast United States. Data are derived from downscaled CMIP6‑LOCA2 climate model outputs and observed historical precipitation and temperature data. Values are aggregated by U.S. state within the Southeast CONUS region and by Environmental Protection Agency (EPA) Level III Ecoregions to provide spatially consistent summaries relevant for natural‑resource planning and State Wildlife Action Plan (SWAP) revisions.