**Clear skies and moderate northerly flow are positioning Shanghai’s October 7 maximum near 25–26 °C, aligning with the market’s heaviest trading at those levels (45 % for 26 °C, 31 % for 25 °C).** Official and ensemble forecasts from the period show a high-pressure ridge delivering wall-to-wall sunshine, light northwest-to-northeast winds, and negligible precipitation risk. Daytime heating under these conditions typically peaks in the mid-20s °C after recent cooler, occasionally showery days earlier in the month. Seasonal norms for early October place Shanghai’s average highs around 24–26 °C, and current model runs show no strong warm or cold anomalies that would push readings outside the narrow 25–27 °C band. The 14 % probability assigned to 27 °C reflects residual uncertainty in boundary-layer mixing and exact insolation, while lower outcomes remain priced as low-probability tail risks should unexpected cloud cover or a sharper wind shift develop overnight. Updated model guidance and any late-day observational adjustments from regional meteorological centers will be the key near-term catalysts for price movement ahead of resolution.