Current National Weather Service and AccuWeather forecasts for Miami on August 5 project an overnight low near 78–79 °F, aligning with the market’s near-even split between the 78–79 °F (50 %) and 76–77 °F (45.5 %) bins. Typical August nocturnal minima hover around 78 °F under the region’s high humidity and light easterly flow; however, variable cloud cover, scattered thunderstorms, and subtle differences in boundary-layer mixing can shift the actual minimum by 1–2 °F. Traders weigh these short-term atmospheric details against climatological baselines from Miami International Airport, recognizing that even modest changes in dew-point depression or wind speed near dawn can determine whether the reading settles in the upper or lower half of the narrow 76–79 °F range before the market resolves.