Forecast models from Météo-France and international ensembles show a mild Atlantic flow with southwest winds and increasing cloud cover expected to limit daytime heating in Paris on October 9, producing a maximum near 15–17 °C. Recent runs indicate possible light showers or drizzle that further suppress temperatures by enhancing evaporative cooling and reducing solar insolation, while the climatological October average high of roughly 17.7 °C serves as the baseline. Market-implied odds cluster on 16 °C and 17 °C because ensemble spread remains modest yet acknowledges variability in exact cloud timing and boundary-layer moisture; updated high-resolution guidance later today or tomorrow morning will likely tighten the range ahead of resolution.