Official National Weather Service observations for Miami International Airport on September 7 recorded a daily maximum of 92 °F under partly cloudy skies with scattered showers, aligning closely with the market’s near-certain 90-91 °F outcome. Late-summer climatology for the region features average highs near 90 °F, modulated by high humidity, light steering winds, and typical afternoon sea-breeze convection that limits extreme heating. Pre-event model consensus from NOAA and local forecasters projected a peak in the low 90s, with no tropical moisture surge or clear-sky anomaly to push readings higher. A modest 2 °F departure above normal was consistent with recent days’ pattern of 91–93 °F maxima. Only an unexpected late-day clearing or measurement revision at the official station could have shifted the result outside the dominant bin.