NASA's Goddard Institute for Space Studies (GISS) GISTEMP v4 dataset confirms March 2026's global land-ocean temperature index at 1.27°C above the 1951-1980 baseline, securing trader consensus at 100% implied probability for the 1.25–1.29ºC outcome. This value, derived from integrated weather station, ship, and buoy observations with satellite adjustments, underscores persistent anthropogenic warming trends, with contributions from elevated ocean heat content and land surface anomalies in Eurasia and the North Atlantic amid transitioning ENSO-neutral conditions post-2025 El Niño. March 2026 ties for the second-warmest March on record, aligning with a ~0.9°C rise since the baseline. Rare post-release revisions to raw data could theoretically shift the precise figure by up to 0.05°C, though such changes seldom alter bin assignments. Final updates expected later in 2026.