Trader consensus shows notable uncertainty in Miami's overnight minimum for July 13, with the 73°F-or-below outcome at 39% implied probability closely matched by the 80–81°F and 82–83°F bins near 38%. Key scientific drivers include subtropical ridge positioning that modulates wind flow and moisture advection from the warm Gulf Stream, plus variable cloud cover and potential convective activity that alter radiative cooling rates. National Weather Service ensemble guidance exhibits spread in boundary-layer humidity and low-level wind shear, which can shift minima by several degrees. July climatology places typical lows near 76–78°F, underscoring how small forecast deviations in these factors sustain the dispersed market odds ahead of the next model update cycle.