Recent observational data from Paris weather stations confirm a daily maximum of 25°C under clear to partly cloudy skies, light westerly winds, and stable high pressure, aligning closely with National Meteorological Service guidance and multiple forecast model runs. This outcome reflects typical mid-September conditions, with the peak occurring in the afternoon before gradual cooling. Trader consensus at 100% implied probability for 25°C rests on verified measurements rather than projections. Minor revisions remain possible if final official tallies adjust for station-specific timing or localized variations, though such shifts are rare once preliminary readings stabilize.