Official temperature observations from Miami on May 26 recorded a daily minimum in the 80-81°F range, driving the market's near-certain consensus. Late-May subtropical conditions, including warm Gulf Stream influence and persistent southeasterly winds, typically suppress overnight cooling and support elevated lows compared to earlier spring baselines. National Weather Service data releases aligned closely with trader positioning, leaving little room for revision. Only an unusual station discrepancy or post-event data adjustment could alter the outcome, scenarios that remain rare given standardized reporting protocols.