Recent forecast model runs highlight a transitional weather pattern over northern France, with high pressure weakening after a prolonged heatwave and allowing greater advection of cooler maritime air from the Atlantic. This introduces notable uncertainty in overnight minimum temperatures for Paris on August 5, as radiative cooling rates under variable cloud cover and wind speeds could produce lows ranging from the mid-teens to low-20s Celsius. Trader consensus around 16–19°C reflects these ensemble spreads from agencies like Météo-France and ECMWF, where small shifts in frontal timing or boundary-layer moisture could alter outcomes. Historical August minima near 15°C provide context, but current conditions favor a dip below recent 21°C readings without guaranteeing extremes. Updated model guidance expected within 24–48 hours will likely refine probabilities ahead of resolution.