Recent forecasts from Météo-France and ensemble models indicate an approaching Atlantic frontal system will bring increased cloud cover, scattered showers, and potential thunderstorms to Paris on August 27, limiting solar heating and capping the daily maximum near 25–27°C. This follows a brief warm spell with highs near 29–31°C on prior days, as southwesterly flow advects milder, more humid air. Model spreads arise mainly from timing and intensity of convective activity, which can suppress afternoon peaks by several degrees depending on cloud thickness and precipitation timing. Official Météo-France observations at Paris-Montsouris will determine resolution, with traders weighting the 26–28°C range most heavily amid this uncertainty. Updated model runs and short-range guidance over the next 24 hours remain the key near-term drivers.