**Official observations from Amsterdam-area stations, including Schiphol, recorded a daily maximum of 14°C on October 11, 2026, under cool, rainy conditions with westerly winds.** This aligns with real-time model consensus and hourly data showing temperatures peaking near 14°C amid showers and moderate breeze, falling short of the long-term average high of roughly 15.5°C for the date. Traders priced the 14°C outcome at essentially 100% once afternoon measurements confirmed the ceiling, reflecting the high reliability of surface observations for single-day temperature resolution. Minor variations in station-specific readings or rounding conventions remain possible but would not shift the outcome given the tight clustering of reports around this value.