Recent cold air advection across Shandong has driven overnight cooling in Jinan, with official forecasts from the China Meteorological Administration and regional models converging on a minimum near 14–16 °C under mostly cloudy skies and light northerly flow. This places the lowest temperature squarely in the narrow band where market-implied probabilities for 15 °C, 16 °C, and 17 °C remain nearly equal, reflecting residual uncertainty in boundary-layer mixing and exact timing of the coldest hour before sunrise. Historical September climatology shows average lows around 16–18 °C, so the current anomaly stems directly from the transient high-pressure surge behind the front rather than a broader seasonal shift. Updated model runs tonight and early-morning observations will determine whether the minimum settles at 15 °C or edges higher.