Recent forecasts for Jinan indicate mostly clear skies and light northeasterly winds on September 1, supporting efficient nighttime radiative cooling under low humidity and modest dew points that favor minimum temperatures in the mid-to-upper teens Celsius. Model consensus points to overnight lows near 18–19°C, consistent with early-autumn climatology where diurnal ranges widen as solar insolation declines, yet small differences in cloud timing, boundary-layer mixing, or wind speed can shift the exact minimum by several degrees. Trader-implied odds cluster evenly across 14–19°C because numerical weather prediction ensembles retain meaningful spread at this lead time, with no dominant synoptic feature such as a cold front or persistent high-pressure ridge to anchor a narrower outcome. Historical September minima in the region rarely fall below 16°C early in the month absent unusual cold-air advection, keeping lower-probability tails below 13°C or above 20°C.