National Weather Service short-range models currently favor an overnight low near 77°F for Miami on May 18, consistent with mid-May climatology and recent observed minima of 72–76°F. Persistent easterly flow and moderate humidity levels limit nocturnal radiative cooling, keeping temperatures above the 74°F threshold that would otherwise favor cooler outcomes. Forecast uncertainty arises mainly from variable cloud cover and sea-breeze timing, which can alter the final minimum by 2–3°F depending on the exact arrival of the marine layer. This distribution of trader-implied probabilities around the 76–79°F bands reflects the narrow range of plausible model solutions and the absence of strong synoptic forcing that might push extremes.