Current National Weather Service and private model guidance for Miami points to an overnight minimum in the upper 70s to low 80s on August 13, driven by typical late-summer subtropical conditions including high humidity, light easterly flow, and limited nocturnal cooling under partly cloudy skies. Historical averages near 80 °F provide a baseline, while any increase in cloud cover or scattered thunderstorms could suppress the low by a degree or two through reduced radiative cooling. The tight spread between the 78–79 °F and 80–81 °F bins reflects genuine forecast uncertainty in boundary-layer details, with new model runs and updated National Hurricane Center guidance expected to refine the outlook before resolution.