Recent forecast models from Météo-France and European ensembles indicate a persistent heat wave over northern France, driven by a stable high-pressure ridge advecting warm subtropical air, with Paris maximum temperatures projected near 31–33 °C on August 2. Ensemble spread arises mainly from differences in low-level moisture, timing of any diurnal heating peaks, and the chance of scattered afternoon cloud build-up or isolated thunderstorms that could cap the daily high by 1–2 °C. Historical August climatology for central Paris shows a mean daily maximum of 26 °C, so current anomalies reflect the strength of the ongoing ridge. With 32 °C and 31 °C outcomes nearly tied in market-implied odds, traders are weighting the balance between continued clear-sky insolation and the narrow window for convective cooling on the final model runs before resolution.