Recent National Weather Service forecasts and ensemble guidance indicate the overnight low for Miami on September 1 will most likely settle in the low 80s°F, consistent with market-implied probabilities favoring the 80-81°F bin. Persistent warm Atlantic and Gulf waters, combined with light easterly flow and high boundary-layer moisture, are limiting nocturnal radiational cooling typical of the late-summer regime. Scattered showers and thunderstorms expected through the afternoon and evening will further suppress temperature drops by maintaining cloud cover and humidity. Historical climatology for early September shows daily minima averaging near 80°F, providing a baseline that current conditions closely track without significant deviation from steering patterns or tropical influences. Updated model runs and the next NWS forecast discussion remain the key near-term catalysts for any shifts in trader positioning.