**Forecast models indicate Miami's daily minimum temperature on August 9 will likely settle between 80°F and 83°F, reflecting typical midsummer tropical conditions with limited variability.** Official guidance from sources like the National Weather Service shows overnight lows holding near 81°F amid high humidity, light easterly winds, and scattered thunderstorm activity that can either suppress or elevate the minimum depending on timing and coverage. Persistent sea-surface temperatures in the upper 80s°F and a moist boundary layer limit radiative cooling, keeping the floor elevated above the long-term August average of about 78°F. The near-even split in market-implied odds between the 80-81°F and 82-83°F bins captures uncertainty around exactly how much cloud cover and convective rain will occur overnight; clearer skies would favor the lower end, while widespread storms or delayed clearing push readings higher. No significant frontal systems or atypical steering patterns are present, so the outcome hinges on short-term mesoscale details in the latest model runs rather than broader seasonal shifts.