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 Amsterdam Airport Schiphol Station in degrees Celsius on 19 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 Amsterdam Airport Schiphol Station, available here: https://www.wunderground.com/history/daily/nl/schiphol/EHAM. 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.
Recent ensemble forecasts from the Met Office, ECMWF, and KNMI converge on a daily maximum of 20–22°C for Amsterdam on August 19, reflecting moderate westerly flow advecting mild North Sea air and partial cloud cover that caps surface heating. These conditions produce the tight clustering of market probabilities around 20°C (32%), 21°C (37%), and 22°C (24%), as small differences in cloud timing, wind speed, or insolation can shift the peak by 1–2°C. Historical August averages near 21°C provide baseline context, yet traders focus on the latest model runs showing limited scope for either stronger marine cooling or brief warming episodes before resolution.