The market consensus at 72-73°F reflects National Weather Service observations from Miami International Airport confirming that minimum temperature on May 15. A dominant subtropical ridge maintained steady southerly flow and limited nocturnal radiational cooling, keeping overnight lows near or above long-term May climatology. Ensemble forecasts from the Global Forecast System and European Centre for Medium-Range Weather Forecasts showed tight agreement on this range, with no meaningful cold-front passage or enhanced boundary-layer mixing to drive sharper drops. While a late-season frontal intrusion could theoretically produce lower readings, current surface analyses and satellite imagery ruled out such developments, leaving only negligible probability on cooler brackets.