Trader consensus on Polymarket reflects tight forecast uncertainty for Milan's highest temperature on March 28, with models like ECMWF and GFS ensembles clustering implied probabilities around 16–18°C amid mild southerly airflow and high-pressure ridging over northern Italy. Recent 48-hour updates show slight divergence: ECMWF leaning toward 17°C peaks from enhanced afternoon solar heating under partly cloudy skies, while GFS variants favor 16–18°C due to potential low-level moisture moderating daytime warmth. Late March climatology averages 13–15°C highs, but this year's positive temperature anomalies from a weakening polar vortex boost the cluster above norms. Traders await fresh 12Z model runs and ARPA Lombardia observations for resolution clarity, as boundary layer mixing could tip outcomes by 1–2°C.