Official National Weather Service observations from New York City stations, including Central Park, recorded a minimum temperature of 71°F on August 17, 2026, aligning precisely with the market’s 70-71°F outcome at 100% implied probability. This reading reflects typical late-summer conditions under a southerly flow with dew points in the upper 60s, as confirmed by surface analyses and model consensus from the prior days. Traders’ near-certain positioning stems from the final verified data release, which meets standard resolution criteria for daily minimums. While rare post-event adjustments to station records or alternative sensor networks could theoretically alter the exact value, such revisions are infrequent for well-monitored urban sites and would require substantial evidence of measurement error.