Current National Weather Service and GFS/ECMWF guidance indicate Miami's overnight low on October 9 will likely settle in the upper 70s under continued southeast flow, high dew points near 76–78°F, and scattered showers that limit radiative cooling. This aligns with recent observations showing persistent warm, humid air masses without significant cold-air advection. Historical October 9 averages near 75°F provide context, yet the current pattern favors values several degrees above normal. Trader odds remain closely clustered from the low 70s through mid-80s because small shifts in cloud cover, thunderstorm timing, or boundary-layer mixing can alter the minimum by a few degrees, while extremes below 69°F or above 85°F carry negligible scientific support in the near term. Updated model runs and evening soundings will refine the precise threshold ahead of market resolution.