Recent forecast ensembles from agencies tracking central China’s spring transition point to a daily maximum near 26°C in Wuhan on May 18, driven by moderate southerly flow across the Yangtze basin combined with increasing cloud cover and scattered showers that cap afternoon heating. Climatological baselines for mid-May place typical highs between 25–28 °C, yet model consensus shows slightly cooler guidance than earlier runs because of higher boundary-layer moisture and reduced insolation. The tight clustering of market-implied odds around 25–27 °C reflects this narrow uncertainty window, with traders weighting the likelihood of brief clearing versus persistent stratus that would suppress the peak by 1–2 °C. Official verification will rely on the local meteorological station’s 24-hour maximum reading, expected within the next 48 hours.