Recent forecasts from Météo-France and European models indicate an intensifying heatwave over northern France, with Paris minimum temperatures on June 19 most likely settling near 23°C amid daytime peaks approaching 37°C. This stems from a strong high-pressure ridge and southerly advection of subtropical air, limiting nocturnal radiative cooling under mostly clear skies and light winds. Ensemble spreads in numerical weather prediction outputs create the observed market clustering between 22–24°C, as small variations in boundary-layer moisture or timing of the daily minimum can shift the overnight low by 1–2°C. Updated model runs and Météo-France briefings over the next 48 hours will likely tighten this range ahead of market resolution.