**Persistent easterly flow and elevated dew points from subtropical high pressure are anchoring Miami's overnight minimums in the upper 70s to low 80s on October 3.** National Weather Service guidance and model consensus show the daily low occurring near dawn, with temperatures holding near 79–82°F amid partly cloudy skies, 10–15 mph east winds, and 20–40% shower chances that limit radiational cooling. This aligns with early-October climatology where Miami averages ~75°F lows, but the current pattern lacks a reinforcing cold front or drier air mass that would allow deeper drops. Trader positioning favoring 78–83°F bins reflects these stable marine-influenced conditions and limited model spread on the overnight minimum, with resolution hinging on the exact pre-dawn reading at official stations.