Forecast models from the National Weather Service and other sources indicate overnight lows in Miami on October 4 will likely settle in the upper 70s to low 80s, aligning with the market's leading implied probabilities for 80-81°F and 78-79°F ranges. Persistent southeast winds around 10-15 mph, high humidity, and a lack of frontal passages or significant cloud cover support gradual cooling without dropping further, consistent with early October climatology where average lows hover near 76°F. Recent model runs show minimal spread, reinforcing trader consensus around these bins ahead of final observations.