Trader sentiment clusters tightly around 78–81°F for Miami’s July 4 overnight low because current model guidance and climatology place the minimum near the July average of 80°F amid persistent high humidity and weak steering flow. Abundant tropical moisture and scattered afternoon convection limit nocturnal radiative cooling, while variable cloud cover and light winds introduce the main uncertainty that separates the top two bins. A tropical disturbance approaching from the western Atlantic could enhance overnight cloudiness and nudge readings toward the lower 78–79°F range or briefly suppress them further if showers linger, yet steering patterns favor typical summer conditions without strong cooling mechanisms. National Weather Service updates on convection timing and boundary-layer moisture will refine probabilities ahead of resolution.