Current National Weather Service and model guidance for Miami on August 28 points to overnight minimum temperatures in the upper 70s to low 80s under a persistent maritime tropical air mass, with easterly winds near 5–10 mph limiting mixing and promoting modest radiative cooling after daytime highs near 90°F. Dew points holding in the mid-to-upper 70s sustain high humidity that curbs sharp drops, while any lingering afternoon convection or variable cloud cover could further moderate the low. Historical August averages near 77–78°F provide context, yet the lack of frontal intrusions or drier air keeps consensus skewed toward 78–81°F outcomes. Traders weigh subtle differences in forecast model runs for wind speed, sky cover, and boundary-layer moisture that determine whether the minimum settles at 78–79°F or edges into the 80–81°F bin, with final resolution hinging on official Miami observations.