Recent Météo-France and ECMWF ensemble forecasts indicate a strengthening high-pressure ridge over western Europe will sustain clear skies, subsidence, and light winds over Paris through August 13, supporting efficient daytime heating and afternoon maxima clustered around 37–39 °C. These conditions sit well above the long-term August climatological mean of roughly 24–25 °C, with limited model spread and dry antecedent soils amplifying the signal. Traders have accordingly placed the strongest implied probability on 38 °C, followed by 37 °C and 39 °C, while discounting extremes outside this narrow band. Official station observations from Paris-Montsouris will determine resolution, with the next model update cycle likely to tighten the forecast range before the event.