Current forecasts from AccuWeather, WeatherBug, and other models project a daily high near 31–32°C for Jinan on September 18 under mostly cloudy skies, light variable winds, and negligible precipitation. This places the outcome firmly in the 26°C-or-higher bin, though the market’s dispersed prices around 24–26°C reflect uncertainty in final model runs, station-specific measurements, and minor shifts in cloud cover or boundary-layer mixing. Late-September climatology features weakening summer heating offset by occasional cool-air intrusions from the north, creating narrow ranges where a 1–2°C adjustment in peak solar insolation or dew-point advection can move the maximum across the key thresholds. Updated guidance expected overnight will clarify whether the warm bias holds.