Forecast consensus from National Weather Service and other models points to highs in the upper 80s for Miami on September 28, supporting the market's leading 88-89°F outcome at 51% implied probability. Seasonal norms show an average daily high of 88.4°F for the date, driven by subtropical Atlantic moisture, typical trade-wind patterns, and residual warmth before stronger fall cooling. Mostly sunny conditions with only a 20-40% chance of afternoon showers could allow temperatures to reach or slightly exceed that range, while increased cloud cover or earlier convection might cap readings near 86-87°F. Historical extremes above 90°F remain possible under clearer, drier steering flow, though current model agreement and lack of tropical influences keep those lower-probability bins in check ahead of final observations.