Recent National Weather Service and AccuWeather guidance points to overnight lows near 81–82 °F for Miami on August 11 amid persistently warm Gulf and Atlantic sea-surface temperatures that limit radiative cooling. High boundary-layer humidity, light easterly flow, and scattered nocturnal cloud cover from typical subtropical moisture further suppress temperature drops, keeping the overnight minimum above the long-term August average of roughly 78 °F. Trader sentiment clusters around 80–83 °F because these conditions favor only modest nocturnal cooling unless clearer skies and calmer winds develop—an outcome models currently rate as possible but not dominant. Any increase in convective activity or stronger onshore flow could hold readings at the upper end of that range, while brief clearing would allow the lower bins to remain competitive.