Recent heatwave conditions across northern France, with Paris peaking near 40°C mid-week under persistent high pressure, have given way to gradual moderation as the system weakens ahead of June 30. Ensemble forecasts from models such as ECMWF and Météo-France indicate a transition toward more variable flow, with potential for increased cloud cover, scattered thunderstorms, or Atlantic moisture that caps daytime maxima in the upper 20s Celsius. Trader consensus around 27–29°C reflects this post-peak cooling trajectory while accounting for residual warmth and urban heat island amplification; the tight spread among leading outcomes stems from minor uncertainties in exact frontal timing and boundary-layer mixing rather than larger synoptic shifts. Historical late-June baselines near 23°C underscore how the current pattern remains elevated despite the easing trend, with resolution hinging on official Paris-Montsouris observations.