Official observations from the National Weather Service confirm a minimum temperature of 64°F at Dallas/Fort Worth on October 8, aligning closely with the market's dominant 64-65°F outcome at 97.5% implied probability. Clear skies, light northeast winds, and above-normal conditions—driven by a persistent warm pattern—produced this reading, which exceeded the 1991-2020 average low of 60°F by 4°F. Forecasters noted minimal overnight cooling under high pressure, consistent with regional model consensus. A realistic challenge would require revised station data or an undetected microclimate effect shifting the official low outside the 64-65°F bin, though such adjustments are rare for verified climate summaries.