Official National Weather Service forecasts for Miami on August 23 point to a high near 91°F under mostly sunny skies with afternoon thunderstorms possible, aligning with the market's strong emphasis on the 90–93°F range. Typical August climatology shows average highs around 90–91°F, while high humidity supports heat indices above 105°F and allows surface temperatures to climb before convective cooling sets in. Recent model guidance and morning observations near 82–83°F indicate steady warming under light southerly flow, with limited cloud cover early in the day favoring a peak in the low 90s. Traders appear to weigh the balance between thunderstorm timing—which could cap readings—and the potential for slightly hotter conditions if storms hold off, consistent with historical variability where daily maxima occasionally reach the mid-90s.