Current observational data from Dutch meteorological stations, including those operated by the Royal Netherlands Meteorological Institute (KNMI), show a daily maximum of 21°C in Amsterdam on September 13. This reading aligns with the market-implied outcome at 100% probability, driven by real-time surface temperature measurements and the absence of any upward revision in afternoon peaks. Model consensus from short-range forecasts had anticipated mild late-summer conditions with limited diurnal warming, consistent with typical early-September climatology for the region. A later official quality-controlled adjustment exceeding 21°C or an undetected microclimate spike could theoretically shift resolution, though such revisions are rare once preliminary highs are reported.