Recent numerical weather prediction ensembles from European and global models indicate a likely peak of 30–32°C in Milan on June 13 under subtropical ridge influence and light southerly flow. Subtle differences in forecast timing of any residual cloud cover, boundary-layer mixing, and urban heat retention explain the tight clustering around 31°C and 32°C outcomes, while lower probabilities for 29°C or 33°C+ reflect ensemble spread and typical model bias in Po Valley summer maxima. An emerging El Niño pattern may contribute modestly to above-average warmth but introduces little near-term uncertainty at this short forecast horizon.