Recent forecasts from Météo-France and ECMWF ensembles indicate a frontal system crossing Paris on September 8, shifting winds westerly and introducing cloud cover with scattered showers that cap daytime heating. This follows warmer, sunnier conditions on the 6th and 7th, with models converging on a maximum near 19–23 °C—close to the long-term average high of 22.6 °C. Trader emphasis on 22–23 °C reflects uncertainty in exact rain timing and cloud thickness, which modulate solar radiation and boundary-layer mixing; a slightly delayed or lighter precipitation window could allow brief warming toward 24 °C, while earlier or heavier rain would favor the lower end of the range. Updated model runs and official briefings in the next 24–48 hours will refine these thresholds.