Météo-France's latest observations and short-range forecast models have locked in a maximum temperature of 14°C for Paris on May 13, driving the market's 99.9% implied probability on this outcome amid persistent cloud cover that sharply limited solar insolation and daytime heating. Cool southwesterly winds ushered in a maritime air mass, capping peaks well below mid-May climatological averages of 18–19°C at official stations like Paris-Montsouris. Model ensembles from ECMWF and AROME show tight consensus around this figure, reflecting measured hourly data topping out at 14°C by mid-afternoon. While near resolution, realistic challenges include rare afternoon cloud breaks enabling brief spikes to 15°C via enhanced surface warming, though probabilities remain negligible as evening cooling sets in. Final bulletins expected within hours will confirm.