Persistent low-level cloud cover and light drizzle across the Sichuan Basin on May 17 are suppressing solar heating and boundary-layer mixing, anchoring the official maximum temperature at Chongqing Jiangbei International Airport near 23 °C according to China Meteorological Administration guidance. Ensemble model runs show tight agreement on southerly flow and minimal afternoon clearing, aligning with mid-May climatology where typical highs reach 24–26 °C but moisture routinely caps peaks. Traders price 23 °C at 99.6 % implied probability because verified station observations through midday confirm this trajectory. Only an unexpected late-day wind shift or rapid dissipation of the stratiform layer could allow readings to climb toward 26 °C, an outcome current guidance assigns low likelihood. Final model updates and real-time surface data remain the key variables to monitor before resolution.