Recent ensemble forecasts from European models indicate a building high-pressure ridge over western Europe that should deliver mostly sunny conditions and light winds across the Paris basin on August 12, supporting afternoon highs centered near 34–36 °C. Météo-France guidance and comparable runs place the most probable maximum around 35 °C, consistent with the market’s 47.5 % implied probability, while the 26.5 % on 34 °C and 14.5 % on 36 °C reflect remaining spread in boundary-layer moisture and exact timing of peak insolation. Paris’s urban heat-island effect and August climatology (typical highs 24–28 °C) provide context for why values above 37 °C remain low-probability outcomes at 3 % or less. Updated model runs and official bulletins through August 11 will be the primary near-term drivers of any shifts in these market-implied odds.