Official National Weather Service observations from Central Park recorded a daily minimum of 71–72°F on September 17, 2026, well above the 1991–2020 climatological average low of 61°F. A warm, moist air mass combined with overnight cloud cover limited radiational cooling, keeping temperatures elevated through the early morning hours as confirmed by preliminary local climatological data. This outcome aligns with broader late-summer patterns of above-normal warmth across the Northeast. The 100% market-implied probability reflects the finality of verified station readings, though minor revisions in post-processed data or alternative station measurements remain theoretically possible though improbable given multiple corroborating reports.