Recent National Weather Service and model consensus point to an overnight low of 78–79°F for Miami on August 4, 2026, consistent with the market's leading bin at 36.5% implied probability. Subtropical summer conditions featuring high humidity and weak pressure gradients produce minimal overnight cooling, while typical August climatology shows average lows near 78°F with rare dips below 74°F. Scattered thunderstorms may develop but are unlikely to generate significant radiational cooling or alter steering patterns enough to shift readings outside the 76–81°F range. Traders weigh these stable atmospheric factors against the possibility of localized sea-breeze enhancement or heavier rainfall briefly lowering minima into the mid-70s before the final observation resolves the market.