Traders assign near-certainty to a highest temperature of 26 °C or higher in Jinan on August 20 because late-summer climatology across Shandong province routinely produces daytime maxima well above this threshold. Regional reanalysis data and long-term station records show August mean highs near 31 °C, with only rare intrusions of cooler northerly flow capable of suppressing readings. Current model guidance from the China Meteorological Administration indicates persistent warm, moist southerly flow under a subtropical high, supporting continued heat with minimal diurnal cooling. A realistic challenge would require an unusually strong cold front or measurement anomaly at the official Jinan station, both statistically uncommon in mid-August.