Official observations from Miami International Airport recorded a daily high of 91°F on September 13, 2026, aligning precisely with the market's dominant 90-91°F outcome. This falls within the typical late-summer range near the 1991–2020 average high of 89.4°F for the date, driven by persistent warm Gulf and Atlantic moisture, light winds, and daytime heating under partly cloudy skies with scattered afternoon storms. National Weather Service data and local forecasts consistently projected lower-90s peaks before convective cooling, matching the observed maximum. Trader consensus at near-certainty reflects the finality of verified station readings, with minimal scope for revision unless alternative station data or quality-control adjustments emerge—scenarios historically rare for this well-monitored site.