Trader consensus on Polymarket tilts toward a 20°C high in Milan at 42.5% implied probability, narrowly ahead of 19°C at 34.5%, driven by the latest ARPA Lombardia bulletins and Italian meteorological forecasts pegging peak daytime temperatures around 20°C under a weakening high-pressure ridge. Patchy clouds and a 20-40% chance of afternoon showers—stemming from incoming moist Atlantic air—introduce uncertainty, potentially capping insolation and favoring 19°C if overcast conditions persist longer than models anticipate. Current morning readings near 12-13°C align with mild advection, while 3B Meteo shows slightly optimistic clears skies pushing toward 22°C in outlier runs. Hourly station data from Milano Linate through evening will clarify the outcome as solar heating competes with increasing cloudiness.