Recent model consensus from ECMWF, GFS, and Météo-France points to a mild October 13 in Paris, with daytime highs centered on 21–22 °C under southwesterly flow and periods of light rain or overcast skies. These conditions limit solar heating while advecting above-average air masses, pushing temperatures several degrees above the 17 °C climatological normal. Trader emphasis on the 21 °C and 22 °C strikes reflects tight model agreement on peak values, with minor spread arising from differences in cloud timing and boundary-layer mixing. Any late-day clearing or stronger southerly winds could nudge readings toward 23 °C, but current guidance keeps that outcome less probable. Updated high-resolution runs and surface observations over the next 48 hours will refine the exact maximum before market resolution.