Current National Weather Service and AccuWeather guidance for Miami on June 19 projects overnight lows near 80–82°F, consistent with the market’s leading 82–83°F bin at 34% implied probability. Persistent south-southeast flow, elevated dew points above 75°F, and limited radiational cooling under partly cloudy skies are the main drivers keeping temperatures from dropping further. The closely contested 74–75°F outcome (31.5%) reflects model uncertainty around potential clearer-sky windows or brief easterly shifts that could enhance nocturnal cooling, though climatological June minima rarely fall below 77°F without a stronger frontal passage. No major synoptic changes are expected before resolution.