Official National Weather Service observations from Central Park—the standard station for New York City highs—confirm the maximum temperature reached 60°F on May 11, 2026, at approximately 5:51 p.m., driving trader consensus to 100% implied probability on the 60-61°F outcome. Persistent cloud cover and a stable boundary layer, as noted in post-event summaries, suppressed heating below pre-event forecast models projecting mid-60s peaks, well under the climatological May 11 normal of 70°F. This verified measurement aligns with hourly data releases, leaving minimal uncertainty. Realistic challenges would require a rare data revision from NWS quality controls, such as sensor recalibration, though such adjustments post-preliminary reports are exceptional. No further updates expected as the market nears resolution.