This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section. This market will resolve to the temperature range that contains the highest temperature recorded at the Shanghai Pudong International Airport Station in degrees Celsius on 17 Aug '26. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD. To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Mid-August climatology for Shanghai places typical daily highs near 31°C under the influence of the western Pacific subtropical high, which promotes clear skies, light winds, and elevated humidity that limits nighttime cooling. Recent ensemble forecasts from global models show broad consensus around 30–32°C for August 17, with the 31°C outcome holding the highest implied probability because it aligns with both historical analogs and current steering patterns that favor modest daytime heating without strong cold-air intrusions or typhoon-related cooling. Short-range variability stems from potential changes in boundary-layer moisture and cloud cover, while longer-range uncertainty grows from evolving monsoon trough positioning; traders appear to weight the stable warm-season baseline more heavily than outlier scenarios that would require rapid synoptic shifts.