Official forecasts from Taiwan’s Central Weather Administration project a daytime high of 25–26 °C in Taipei on June 9 under persistent cloud cover and scattered showers or thunderstorms, establishing the market’s near-certain 26 °C outcome. This aligns with typical early-June climatology for the region, where mean highs reach 28–30 °C yet are frequently suppressed by monsoonal moisture and reduced insolation. Model consensus across regional guidance supports limited diurnal warming, with rain-cooled boundary layers keeping maxima at or below the upper-20s °C threshold. A realistic challenge would require an unexpected clearing trend or stronger southerly flow that allows greater surface heating, though current observations and short-range ensembles show low probability of such shifts before the daily maximum is recorded.