Recent cooling after an early August heatwave has tightened the market around 24–25°C highs for Paris on August 20, with traders pricing in a return toward seasonal norms near 24°C. Forecast models show a transition to more zonal flow with increased cloud cover and possible showers that limit daytime heating, while steering patterns from the Atlantic moderate any residual warmth. Small differences in predicted maximums hinge on the exact timing and coverage of these clouds versus brief sunny breaks, plus minor variations in boundary-layer moisture. With resolution only two days away, updates from Météo-France and ensemble guidance on wind and insolation will likely determine whether the 24°C or 25°C outcome prevails.