Recent National Weather Service and private model runs indicate Miami's August 7 overnight low will likely settle near 78–81 °F, consistent with climatological norms for early August when sea-breeze convergence and scattered nocturnal thunderstorms limit radiational cooling. High boundary-layer moisture and light variable winds reduce the diurnal temperature range, while any earlier or more persistent cloud cover could shave 1–2 °F off the minimum. Traders therefore assign nearly equal weight to the 78–79 °F and 80–81 °F bins because small differences in storm timing or wind direction can shift the recorded low across that narrow threshold; updated model guidance tonight and tomorrow morning will provide the clearest signal ahead of market resolution.