Recent forecast guidance from European meteorological models points to a mild spring high-pressure system over northern Italy, supporting maximum temperatures in Milan near 21°C on May 18, with limited diurnal heating from moderate cloud cover and light southeasterly winds. This alignment of stable anticyclonic conditions and typical May climatology—where average highs reach about 22°C—explains the tight market clustering around 20–22°C. Minor model spread on exact cloud thickness and timing of any weak frontal passage creates the narrow gap between the top three outcomes, reflecting genuine uncertainty in peak readings that official observations will ultimately settle.