Official observations from National Weather Service stations, including Houston Hobby Airport, recorded a daily maximum of 79°F on October 4, 2026—well below the 1991–2020 normal of 86°F—prompting the near-certain market alignment with the 78–79°F bin. Persistent cloud cover, northeast winds averaging 8–13 mph, and scattered showers suppressed daytime heating, preventing the usual late-summer warmth from building. These conditions aligned with preliminary climatological data showing a 7°F departure below normal and contrasted with recent prior days that reached the low 90s. While minor station-to-station variations (such as 80°F at some reporting points) exist due to microclimate or measurement timing, the primary official records firmly support the dominant outcome; only substantial revisions to verified NWS summaries could alter resolution.