Persistent high-pressure dominance across the Po Valley, reinforced by the ongoing 2026 European heatwave and Italy’s red alerts for Milan, underpins trader focus on 34–35°C as the most probable daily maxima for August 13. Recent model runs from ECMWF and GFS show peak temperatures hovering near these thresholds under mostly clear skies and light easterly flow, with limited moisture advection from the Alps keeping humidity moderate and allowing strong daytime heating. Small differences between 34°C and 36°C hinge on subtle variations in boundary-layer mixing, urban heat-island amplification within Milan, and any late-day convective development that could shave a degree or two from the peak. Official guidance from regional meteorological services continues to flag the possibility of brief exceedances above 35°C, yet ensemble spreads remain wide enough to keep the market tightly balanced between the two leading outcomes. Updated short-range forecasts issued within the next 24–48 hours will likely resolve much of the remaining uncertainty ahead of market resolution.