Current short-range forecast models from agencies such as the ECMWF and GFS converge on peak temperatures of 33–35°C in Milan on June 18 under sunny, high-pressure conditions with light winds, driving the market's tight clustering around those outcomes. The 34°C contract leads because ensemble means and recent model runs place the daily maximum near that threshold during afternoon heating, while the 2°C spread between 33°C and 35°C reflects typical uncertainty in boundary-layer mixing, urban heat-island amplification at official stations, and minor timing shifts in the diurnal curve. Historical June climatology for the Po Valley supports mid-30s readings without extreme heat advection, and no major synoptic changes are expected before resolution. Updated model guidance and any last-minute observational adjustments from regional networks remain the key variables that could nudge probabilities among these closely matched contracts.