**Typical midsummer nocturnal conditions in subtropical Miami drive the clustered probabilities around 78–83°F for the July 8 minimum temperature.** Official forecasts and climatological normals place overnight lows near 81–83°F, with high humidity (often 70–80%+) and light southeast winds limiting radiative cooling under partly cloudy skies. Thunderstorm activity, common in the afternoon or evening, can briefly enhance mixing or deliver localized cooling, contributing to the tight spread among the leading bins (80–81°F, 82–83°F, and 78–79°F each near 22%). Recent model consensus shows no major cold advection or atypical steering patterns, keeping outcomes above 74°F heavily favored while the low-probability tails (below 74°F or above 86°F) reflect the rarity of significant deviations in July. Key variables traders are monitoring include updated National Weather Service guidance on cloud cover and wind overnight, which directly influence how far temperatures fall before sunrise.