**Trader sentiment for the lowest temperature in Miami on June 15 centers on typical early-summer conditions, with market-implied odds heavily favoring 78–79°F (39%) and 76–77°F (23.5%).** National Weather Service and AccuWeather guidance project an overnight low near 78°F under partly cloudy skies, consistent with June normals of roughly 77–79°F at Miami International Airport. High humidity, urban heat retention, and light winds limit radiative cooling, keeping minima elevated even after daytime highs reach the upper 80s to low 90s. The current hot, humid pattern with scattered afternoon thunderstorms shows no incoming cold fronts or unusual synoptic shifts that would drop temperatures into the mid-70s or below. Ensemble models reinforce this clustering around the upper 70s, producing the observed probability distribution where outcomes outside 76–81°F receive minimal share. Upcoming NWS forecast updates and any last-minute model runs could refine the exact value within that narrow band before resolution.