This market will resolve to the temperature range that contains the lowest temperature recorded by the Hong Kong Observatory in degrees Celsius on 4 Sep '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Min (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket. This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is initially published for this market's timeframe will not be considered for this market's resolution.
Official forecasts from the Hong Kong Observatory indicate a minimum temperature of 25°C on September 4, driven by northwest to northwesterly winds of force 4–5, high humidity near 75–95%, and scattered showers linked to the nearby tropical system Saudel interacting with the northeast monsoon. These conditions favor overnight radiative cooling limited to the mid-20s Celsius, consistent with climatological early-September baselines around 25°C. Model consensus across sources shows little deviation, with lows clustered between 24–26°C and no signals of stronger cooling or warming intrusions. Traders’ heavy weighting on 25°C (50% implied probability) reflects this tight forecast range, while the 24°C and 26°C outcomes capture residual uncertainty in shower timing and wind shifts ahead of final overnight observations.