Official National Weather Service observations at Houston Intercontinental Airport recorded a daily maximum of 89°F on September 6, 2026, directly supporting the market's 100% consensus on the 88-89°F bin. This value fell 3°F below the 1991-2020 normal high of 92°F amid partly cloudy skies, light southerly winds, and typical late-summer humidity levels that limited further warming. The outcome aligns with nearby station reports and contrasts with recent September highs often exceeding 93°F. Minor variations in airport siting or timing of peak readings represent the only realistic factors that could have shifted resolution, though standardized NWS protocols and cross-station consistency make such discrepancies improbable.