Official temperature observations from New York City stations on October 3 recorded a daily maximum in the 70-71°F range, consistent with National Weather Service data and short-range forecast models showing stable high-pressure conditions without notable warm-air advection. This aligns with early October climatology for the Northeast, where historical averages fall near 68-72°F absent strong anomalies. The market-implied 100% probability on 70-71°F reflects trader assessment of verified measurements from authoritative monitoring networks, with minimal uncertainty once the calendar day closed. Unlikely revisions could stem from station-specific discrepancies or rare post-processing adjustments, though such changes seldom alter the reported daily high by more than a degree.