Current forecast models from the Global Forecast System and European Centre for Medium-Range Weather Forecasts place Chongqing’s maximum temperature on May 17 in a narrow 24–26 °C window, with ensemble spreads reflecting modest uncertainty from variable southerly moisture transport and localized urban heat-island effects. Subtropical high-pressure ridging is expected to suppress widespread cloud cover, allowing surface heating to peak in the mid-afternoon, yet residual low-level humidity from the East Asian monsoon may cap further warming. Historical May climatology for the city shows a mean daily maximum near 25 °C, providing a baseline against which the current guidance sits slightly above average. Traders therefore assign the highest implied probabilities to 25 °C and 26 °C, while the close clustering across 24–27 °C outcomes underscores the limited spread in latest model runs and the sensitivity of final readings to any late-day convective development.