National Weather Service and AccuWeather guidance for Miami on August 4 point to a high near 89–91°F under partly to mostly sunny skies with scattered afternoon thunderstorms, aligning with August climatology of 87–90°F at Miami International Airport. Recent record-setting heat in late July and early August, driven by elevated sea-surface temperatures and persistent high pressure, has elevated trader focus on the upper end of normal ranges, though increased moisture and storm activity introduce cooling potential that caps upside odds. Model consensus emphasizes modest steering winds and typical diurnal heating cycles, keeping 90–91°F as the plurality outcome while supporting the strong combined probability on 88–93°F bins. Updated NWS briefings and next-day model runs will refine these probabilities ahead of resolution.