Trader sentiment for Miami's August 12 minimum temperature reflects tight clustering around 78–83°F amid typical late-summer conditions. High humidity and persistent southeast flow from the Atlantic limit nocturnal radiative cooling, keeping overnight lows near or slightly above the 80°F climatological average. Recent National Weather Service guidance shows clear to partly cloudy skies with light winds, favoring modest cooling to the upper 70s if dew points drop or clouds remain sparse overnight; conversely, increased moisture or scattered showers could trap heat and push the low into the low 80s. Model consensus from NOAA and local observations emphasizes the narrow range driven by these boundary-layer dynamics rather than any synoptic shift.