Recent official forecasts from multiple models converge on a high of 22–23°C in Paris on August 28, driven by a strengthening southwesterly flow ahead of an Atlantic low that advects cooler, moister maritime air and increases cloud cover. This setup limits daytime insolation while supporting scattered showers and thunderstorms, which further suppress peak temperatures relative to the 24.2°C climatological average. The market’s leading 26°C+ outcome at 39% implied probability reflects residual uncertainty in model timing of the frontal passage and potential for localized clearing that could add 2–3°C, whereas the tight clustering around 22–24°C outcomes captures the range of ensemble solutions for boundary-layer mixing and precipitation timing. Updated NWP runs over the next 24–48 hours will likely refine the exact maximum.