Latest high-resolution model consensus from GFS and regional guidance points to a maximum of 25°C in Milan on September 27 under clear anticyclonic conditions, light easterly winds, and minimal cloud cover, producing the 73% market-implied probability for that exact outcome. Stable high pressure and seasonal subsidence have suppressed daytime heating relative to mid-September peaks while preventing cooler advection, keeping the range tightly clustered between 24–26°C. Official updates through late September 26 show no meaningful forecast shifts, with 26°C retaining a secondary 22% probability if boundary-layer mixing proves slightly stronger than expected. Historical September maxima near 24°C provide context for the current mild setup.