Latest ensemble forecasts from ECMWF, GFS, and Météo-France position a high temperature of 17°C in Paris on April 17 as the leading outcome at 50% market-implied probability, reflecting trader consensus on mild spring conditions under westerly Atlantic flows delivering cool, moist air masses. Over the past 48 hours, model refinements have converged on this figure after earlier runs hinted at slightly warmer peaks, influenced by persistent partial cloud cover and moderate winds capping daytime heating near climatological norms of 16–17°C for mid-April. Symmetric tail risks for 16°C or below (25.5%) and 26°C or higher (25.5%) account for potential cold snaps or unexpected ridging, though inherent short-range forecast uncertainty persists; watch daily updates from the National Meteorological Service for shifts ahead of resolution.