Trader sentiment for Miami's August 12 low centers on 80–83°F because National Weather Service and model guidance converge on an overnight minimum near 80–81°F under subtropical high pressure, light southeast winds, and partly cloudy skies that limit radiational cooling. Typical August climatology for Miami shows daily lows averaging 78°F with minimal day-to-day variance absent tropical moisture surges or cold fronts. Current conditions—highs near 92°F followed by a chance of evening thunderstorms then clearing—support this narrow range, as humidity and urban heat island effects prevent sharper drops. The market assigns over 90% probability to 80–83°F, reflecting strong consensus ahead of final overnight observations, with only modest shifts possible from unexpected convective cooling or revised model runs.