Official temperature observations from New York City stations, including Central Park, recorded a daily maximum of 82–83°F on September 9, driving the market’s near-certain pricing on that bin. National Weather Service data and automated surface observations aligned closely with this range, reflecting typical early-September conditions under moderate southerly flow and limited daytime heating. With the event now concluded, resolution hinges on verified readings rather than forecasts, leaving minimal room for revision unless post-analysis adjustments to station data emerge. Historical September averages near 78°F provide context, but the observed values matched the dominant outcome without exceeding thresholds that would shift bins.