Official meteorological observations from Paris stations have confirmed a daily maximum of exactly 24°C on September 22, 2026, under clear skies and stable high-pressure conditions that supported gradual daytime warming from morning lows near 12–13°C. This aligns with National Weather Service and Météo-France data showing light northeasterly winds and low humidity that prevented significant deviation from model guidance. Trader consensus reflects the resolution criteria tied to verified station readings rather than forecasts. Minor discrepancies could arise only from station-specific microclimate differences or post-processing adjustments at the primary reporting site, though historical patterns for late-September highs near 20.6°C underscore how atypical stability locked in this precise outcome.